31354577873 has 2 divisors, whose sum is σ = 31354577874. Its totient is φ = 31354577872.

The previous prime is 31354577869. The next prime is 31354577921. The reversal of 31354577873 is 37877545313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22274965504 + 9079612369 = 149248^2 + 95287^2 .

It is a cyclic number.

It is not a de Polignac number, because 31354577873 - 2² = 31354577869 is a prime.

It is not a weakly prime, because it can be changed into another prime (31354577833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15677288936 + 15677288937.

It is an arithmetic number, because the mean of its divisors is an integer number (15677288937).

Almost surely, 2^31354577873 is an apocalyptic number.

It is an amenable number.

31354577873 is a deficient number, since it is larger than the sum of its proper divisors (1).

31354577873 is an equidigital number, since it uses as much as digits as its factorization.

31354577873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7408800, while the sum is 53.

The spelling of 31354577873 in words is "thirty-one billion, three hundred fifty-four million, five hundred seventy-seven thousand, eight hundred seventy-three".