1156560317831 has 4 divisors (see below), whose sum is σ = 1167369292872. Its totient is φ = 1145751342792.

The previous prime is 1156560317813. The next prime is 1156560317833. The reversal of 1156560317831 is 1387130656511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1156560317831 - 2⁶ = 1156560317767 is a prime.

It is a super-2 number, since 2×1156560317831² (a number of 25 digits) 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 (1156560317833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5404487360 + ... + 5404487573.

It is an arithmetic number, because the mean of its divisors is an integer number (291842323218).

Almost surely, 2^{1156560317831} is an apocalyptic number.

1156560317831 is a deficient number, since it is larger than the sum of its proper divisors (10808975041).

1156560317831 is a wasteful number, since it uses less digits than its factorization.

1156560317831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10808975040.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 1156560317831 in words is "one trillion, one hundred fifty-six billion, five hundred sixty million, three hundred seventeen thousand, eight hundred thirty-one".