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310442245 = 52914914369
BaseRepresentation
bin10010100000001…
…111100100000101
3210122011002200221
4102200033210011
51113433122440
650445504341
710456500301
oct2240174405
9718132627
10310442245
1114a266943
1287b720b1
134c415a49
142d330d01
151c3c2d4a
hex1280f905

310442245 has 16 divisors (see below), whose sum is σ = 387990000. Its totient is φ = 238163968.

The previous prime is 310442243. The next prime is 310442257. The reversal of 310442245 is 542244013.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 15358561 + 295083684 = 3919^2 + 17178^2 .

It is a cyclic number.

It is not a de Polignac number, because 310442245 - 21 = 310442243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310442243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14421 + ... + 28789.

It is an arithmetic number, because the mean of its divisors is an integer number (24249375).

Almost surely, 2310442245 is an apocalyptic number.

It is an amenable number.

310442245 is a deficient number, since it is larger than the sum of its proper divisors (77547755).

310442245 is a wasteful number, since it uses less digits than its factorization.

310442245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14552.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 310442245 is about 17619.3712997939. The cubic root of 310442245 is about 677.1116277396. Note that the first 3 decimals are identical.

Adding to 310442245 its reverse (542244013), we get a palindrome (852686258).

The spelling of 310442245 in words is "three hundred ten million, four hundred forty-two thousand, two hundred forty-five".

Divisors: 1 5 29 145 149 745 4321 14369 21605 71845 416701 2083505 2140981 10704905 62088449 310442245