31314004237 has 2 divisors, whose sum is σ = 31314004238. Its totient is φ = 31314004236.

The previous prime is 31314004231. The next prime is 31314004247. The reversal of 31314004237 is 73240041313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31110257161 + 203747076 = 176381^2 + 14274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31314004237 is a prime.

It is a super-2 number, since 2×31314004237² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31314004231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15657002118 + 15657002119.

It is an arithmetic number, because the mean of its divisors is an integer number (15657002119).

Almost surely, 2^31314004237 is an apocalyptic number.

It is an amenable number.

31314004237 is a deficient number, since it is larger than the sum of its proper divisors (1).

31314004237 is an equidigital number, since it uses as much as digits as its factorization.

31314004237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

The spelling of 31314004237 in words is "thirty-one billion, three hundred fourteen million, four thousand, two hundred thirty-seven".