31232103137 has 2 divisors, whose sum is σ = 31232103138. Its totient is φ = 31232103136.

The previous prime is 31232103103. The next prime is 31232103173. The reversal of 31232103137 is 73130123213.

Together with next prime (31232103173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21082749601 + 10149353536 = 145199^2 + 100744^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232103137 - 2¹⁸ = 31231840993 is a prime.

It is not a weakly prime, because it can be changed into another prime (31232103037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616051568 + 15616051569.

It is an arithmetic number, because the mean of its divisors is an integer number (15616051569).

Almost surely, 2^31232103137 is an apocalyptic number.

It is an amenable number.

31232103137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232103137 is an equidigital number, since it uses as much as digits as its factorization.

31232103137 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 31232103137 in words is "thirty-one billion, two hundred thirty-two million, one hundred three thousand, one hundred thirty-seven".