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1244541131 = 43131921943
BaseRepresentation
bin100101000101110…
…0011000011001011
310012201211020110222
41022023203003023
510022100304011
6323254500255
742561265541
oct11213430313
93181736428
101244541131
11589569199
122a896468b
1316aabac92
14bb405d91
15743d7ddb
hex4a2e30cb

1244541131 has 8 divisors (see below), whose sum is σ = 1274507520. Its totient is φ = 1214621352.

The previous prime is 1244541127. The next prime is 1244541163. The reversal of 1244541131 is 1311454421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244541131 - 22 = 1244541127 is a prime.

It is a super-2 number, since 2×12445411312 = 3097765253501518322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1244541131.

It is not an unprimeable number, because it can be changed into a prime (1244541121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45746 + ... + 67688.

It is an arithmetic number, because the mean of its divisors is an integer number (159313440).

Almost surely, 21244541131 is an apocalyptic number.

1244541131 is a deficient number, since it is larger than the sum of its proper divisors (29966389).

1244541131 is a wasteful number, since it uses less digits than its factorization.

1244541131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23305.

The product of its digits is 1920, while the sum is 26.

The square root of 1244541131 is about 35278.0545240239. The cubic root of 1244541131 is about 1075.6469532102.

Adding to 1244541131 its reverse (1311454421), we get a palindrome (2555995552).

The spelling of 1244541131 in words is "one billion, two hundred forty-four million, five hundred forty-one thousand, one hundred thirty-one".

Divisors: 1 43 1319 21943 56717 943549 28942817 1244541131