1156107231 has 12 divisors (see below), whose sum is σ = 1757824120. Its totient is φ = 730172880.

The previous prime is 1156107221. The next prime is 1156107317. The reversal of 1156107231 is 1327016511.

1156107231 is a `hidden beast` number, since 1 + 1 + 561 + 0 + 72 + 31 = 666.

It is not a de Polignac number, because 1156107231 - 2¹⁹ = 1155582943 is a prime.

It is a super-2 number, since 2×1156107231² = 2673167859140974722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1156107195 and 1156107204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156107221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3380260 + ... + 3380601.

Almost surely, 2^1156107231 is an apocalyptic number.

1156107231 is a deficient number, since it is larger than the sum of its proper divisors (601716889).

1156107231 is a wasteful number, since it uses less digits than its factorization.

1156107231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6760886 (or 6760883 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1156107231 is about 34001.5768899032. The cubic root of 1156107231 is about 1049.5409122291.

The spelling of 1156107231 in words is "one billion, one hundred fifty-six million, one hundred seven thousand, two hundred thirty-one".