31327672361 has 2 divisors, whose sum is σ = 31327672362. Its totient is φ = 31327672360.

The previous prime is 31327672351. The next prime is 31327672373. The reversal of 31327672361 is 16327672313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30997123600 + 330548761 = 176060^2 + 18181^2 .

It is a cyclic number.

It is not a de Polignac number, because 31327672361 - 2³⁰ = 30253930537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31327672331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15663836180 + 15663836181.

It is an arithmetic number, because the mean of its divisors is an integer number (15663836181).

Almost surely, 2^31327672361 is an apocalyptic number.

It is an amenable number.

31327672361 is a deficient number, since it is larger than the sum of its proper divisors (1).

31327672361 is an equidigital number, since it uses as much as digits as its factorization.

31327672361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 41.

The spelling of 31327672361 in words is "thirty-one billion, three hundred twenty-seven million, six hundred seventy-two thousand, three hundred sixty-one".