11310971631 has 4 divisors (see below), whose sum is σ = 15081295512. Its totient is φ = 7540647752.

The previous prime is 11310971603. The next prime is 11310971653. The reversal of 11310971631 is 13617901311.

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 11310971631 - 2¹³ = 11310963439 is a prime.

It is a super-2 number, since 2×11310971631² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11310971592 and 11310971601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11310976631) 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, 1885161936 + ... + 1885161941.

It is an arithmetic number, because the mean of its divisors is an integer number (3770323878).

Almost surely, 2^11310971631 is an apocalyptic number.

11310971631 is a deficient number, since it is larger than the sum of its proper divisors (3770323881).

11310971631 is an equidigital number, since it uses as much as digits as its factorization.

11310971631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770323880.

The product of its (nonzero) digits is 3402, while the sum is 33.

The spelling of 11310971631 in words is "eleven billion, three hundred ten million, nine hundred seventy-one thousand, six hundred thirty-one".