11271564931 has 16 divisors (see below), whose sum is σ = 12589315200. Its totient is φ = 10002928320.

The previous prime is 11271564919. The next prime is 11271564991. The reversal of 11271564931 is 13946517211.

It is not a de Polignac number, because 11271564931 - 2⁹ = 11271564419 is a prime.

It is a super-2 number, since 2×11271564931² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11271564911) 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, 987151 + ... + 998503.

It is an arithmetic number, because the mean of its divisors is an integer number (786832200).

Almost surely, 2^11271564931 is an apocalyptic number.

11271564931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11271564931 is a deficient number, since it is larger than the sum of its proper divisors (1317750269).

11271564931 is a wasteful number, since it uses less digits than its factorization.

11271564931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13506.

The product of its digits is 45360, while the sum is 40.

The spelling of 11271564931 in words is "eleven billion, two hundred seventy-one million, five hundred sixty-four thousand, nine hundred thirty-one".