31116011873 has 2 divisors, whose sum is σ = 31116011874. Its totient is φ = 31116011872.

The previous prime is 31116011867. The next prime is 31116011893. The reversal of 31116011873 is 37811061113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22127455009 + 8988556864 = 148753^2 + 94808^2 .

It is a cyclic number.

It is not a de Polignac number, because 31116011873 - 2⁸ = 31116011617 is a prime.

It is not a weakly prime, because it can be changed into another prime (31116011893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15558005936 + 15558005937.

It is an arithmetic number, because the mean of its divisors is an integer number (15558005937).

Almost surely, 2^31116011873 is an apocalyptic number.

It is an amenable number.

31116011873 is a deficient number, since it is larger than the sum of its proper divisors (1).

31116011873 is an equidigital number, since it uses as much as digits as its factorization.

31116011873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

Adding to 31116011873 its reverse (37811061113), we get a palindrome (68927072986).

The spelling of 31116011873 in words is "thirty-one billion, one hundred sixteen million, eleven thousand, eight hundred seventy-three".