31102423397 has 2 divisors, whose sum is σ = 31102423398. Its totient is φ = 31102423396.

The previous prime is 31102423393. The next prime is 31102423427. The reversal of 31102423397 is 79332420113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28674003556 + 2428419841 = 169334^2 + 49279^2 .

It is a cyclic number.

It is not a de Polignac number, because 31102423397 - 2² = 31102423393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31102423393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551211698 + 15551211699.

It is an arithmetic number, because the mean of its divisors is an integer number (15551211699).

Almost surely, 2^31102423397 is an apocalyptic number.

It is an amenable number.

31102423397 is a deficient number, since it is larger than the sum of its proper divisors (1).

31102423397 is an equidigital number, since it uses as much as digits as its factorization.

31102423397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 31102423397 in words is "thirty-one billion, one hundred two million, four hundred twenty-three thousand, three hundred ninety-seven".