31102000073 has 2 divisors, whose sum is σ = 31102000074. Its totient is φ = 31102000072.

The previous prime is 31102000063. The next prime is 31102000117. The reversal of 31102000073 is 37000020113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25994467984 + 5107532089 = 161228^2 + 71467^2 .

It is a cyclic number.

It is not a de Polignac number, because 31102000073 - 2²⁸ = 30833564617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31102000063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551000036 + 15551000037.

It is an arithmetic number, because the mean of its divisors is an integer number (15551000037).

Almost surely, 2^31102000073 is an apocalyptic number.

It is an amenable number.

31102000073 is a deficient number, since it is larger than the sum of its proper divisors (1).

31102000073 is an equidigital number, since it uses as much as digits as its factorization.

31102000073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

Adding to 31102000073 its reverse (37000020113), we get a palindrome (68102020186).

The spelling of 31102000073 in words is "thirty-one billion, one hundred two million, seventy-three", and thus it is an aban number.