[go: up one dir, main page]

Search a number
-
+
310053661 = 31891091031
BaseRepresentation
bin10010011110110…
…000101100011101
3210121102100122221
4102132300230131
51113333204121
650433305341
710453261351
oct2236605435
9717370587
10310053661
1114a0209a5
1287a05251
134c30ac08
142d26d461
151c347b41
hex127b0b1d

310053661 has 16 divisors (see below), whose sum is σ = 326937600. Its totient is φ = 293673600.

The previous prime is 310053659. The next prime is 310053677. The reversal of 310053661 is 166350013.

It is a cyclic number.

It is not a de Polignac number, because 310053661 - 21 = 310053659 is a prime.

It is a super-2 number, since 2×3100536612 = 192266545399005842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (310053631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300216 + ... + 301246.

It is an arithmetic number, because the mean of its divisors is an integer number (20433600).

Almost surely, 2310053661 is an apocalyptic number.

310053661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

310053661 is a deficient number, since it is larger than the sum of its proper divisors (16883939).

310053661 is a wasteful number, since it uses less digits than its factorization.

310053661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 310053661 is about 17608.3406657186. The cubic root of 310053661 is about 676.8289937375.

The spelling of 310053661 in words is "three hundred ten million, fifty-three thousand, six hundred sixty-one".

Divisors: 1 31 89 109 1031 2759 3379 9701 31961 91759 112379 300731 2844529 3483749 10001731 310053661