31608371401 has 2 divisors, whose sum is σ = 31608371402. Its totient is φ = 31608371400.

The previous prime is 31608371387. The next prime is 31608371411. The reversal of 31608371401 is 10417380613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27316156176 + 4292215225 = 165276^2 + 65515^2 .

It is a cyclic number.

It is not a de Polignac number, because 31608371401 - 2¹³ = 31608363209 is a prime.

It is not a weakly prime, because it can be changed into another prime (31608371411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15804185700 + 15804185701.

It is an arithmetic number, because the mean of its divisors is an integer number (15804185701).

Almost surely, 2^31608371401 is an apocalyptic number.

It is an amenable number.

31608371401 is a deficient number, since it is larger than the sum of its proper divisors (1).

31608371401 is an equidigital number, since it uses as much as digits as its factorization.

31608371401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 31608371401 in words is "thirty-one billion, six hundred eight million, three hundred seventy-one thousand, four hundred one".