31200031097 has 2 divisors, whose sum is σ = 31200031098. Its totient is φ = 31200031096.

The previous prime is 31200031073. The next prime is 31200031237. The reversal of 31200031097 is 79013000213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20353016896 + 10847014201 = 142664^2 + 104149^2 .

It is a cyclic number.

It is not a de Polignac number, because 31200031097 - 2³⁴ = 14020161913 is a prime.

It is not a weakly prime, because it can be changed into another prime (31200031397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15600015548 + 15600015549.

It is an arithmetic number, because the mean of its divisors is an integer number (15600015549).

Almost surely, 2^31200031097 is an apocalyptic number.

It is an amenable number.

31200031097 is a deficient number, since it is larger than the sum of its proper divisors (1).

31200031097 is an equidigital number, since it uses as much as digits as its factorization.

31200031097 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 31200031097 in words is "thirty-one billion, two hundred million, thirty-one thousand, ninety-seven".