31012332137 has 2 divisors, whose sum is σ = 31012332138. Its totient is φ = 31012332136.

The previous prime is 31012332103. The next prime is 31012332151. The reversal of 31012332137 is 73123321013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25301356096 + 5710976041 = 159064^2 + 75571^2 .

It is a cyclic number.

It is not a de Polignac number, because 31012332137 - 2⁸ = 31012331881 is a prime.

It is a super-3 number, since 3×31012332137³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31012331137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506166068 + 15506166069.

It is an arithmetic number, because the mean of its divisors is an integer number (15506166069).

Almost surely, 2^31012332137 is an apocalyptic number.

It is an amenable number.

31012332137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012332137 is an equidigital number, since it uses as much as digits as its factorization.

31012332137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 26.

The spelling of 31012332137 in words is "thirty-one billion, twelve million, three hundred thirty-two thousand, one hundred thirty-seven".