31103203101137 has 2 divisors, whose sum is σ = 31103203101138. Its totient is φ = 31103203101136.

The previous prime is 31103203101077. The next prime is 31103203101151. The reversal of 31103203101137 is 73110130230113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29949832350736 + 1153370750401 = 5472644^2 + 1073951^2 .

It is a cyclic number.

It is not a de Polignac number, because 31103203101137 - 2¹² = 31103203097041 is a prime.

It is not a weakly prime, because it can be changed into another prime (31103203101167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551601550568 + 15551601550569.

It is an arithmetic number, because the mean of its divisors is an integer number (15551601550569).

Almost surely, 2^{31103203101137} is an apocalyptic number.

It is an amenable number.

31103203101137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31103203101137 is an equidigital number, since it uses as much as digits as its factorization.

31103203101137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1134, while the sum is 26.

The spelling of 31103203101137 in words is "thirty-one trillion, one hundred three billion, two hundred three million, one hundred one thousand, one hundred thirty-seven".