31327665426 has 24 divisors (see below), whose sum is σ = 67885281360. Its totient is φ = 10441220856.

The previous prime is 31327665419. The next prime is 31327665461. The reversal of 31327665426 is 62456672313.

31327665426 is a `hidden beast` number, since 3 + 1 + 32 + 76 + 6 + 542 + 6 = 666.

It is a super-2 number, since 2×31327665426² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39085 + ... + 253343.

It is an arithmetic number, because the mean of its divisors is an integer number (2828553390).

Almost surely, 2^31327665426 is an apocalyptic number.

31327665426 is an abundant number, since it is smaller than the sum of its proper divisors (36557615934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31327665426 is a wasteful number, since it uses less digits than its factorization.

31327665426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222390 (or 222387 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 45.

The spelling of 31327665426 in words is "thirty-one billion, three hundred twenty-seven million, six hundred sixty-five thousand, four hundred twenty-six".