27221031131 has 32 divisors (see below), whose sum is σ = 33473088000. Its totient is φ = 21618116352.

The previous prime is 27221031127. The next prime is 27221031181. The reversal of 27221031131 is 13113012272.

It is not a de Polignac number, because 27221031131 - 2² = 27221031127 is a prime.

It is a super-2 number, since 2×27221031131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27221031097 and 27221031106.

It is not an unprimeable number, because it can be changed into a prime (27221031181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1537055 + ... + 1554663.

It is an arithmetic number, because the mean of its divisors is an integer number (1046034000).

Almost surely, 2^27221031131 is an apocalyptic number.

27221031131 is a deficient number, since it is larger than the sum of its proper divisors (6252056869).

27221031131 is a wasteful number, since it uses less digits than its factorization.

27221031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17891.

The product of its (nonzero) digits is 504, while the sum is 23.

The spelling of 27221031131 in words is "twenty-seven billion, two hundred twenty-one million, thirty-one thousand, one hundred thirty-one".