31125408655 has 12 divisors (see below), whose sum is σ = 40747702392. Its totient is φ = 22635709280.

The previous prime is 31125408649. The next prime is 31125408667. The reversal of 31125408655 is 55680452113.

It is not a de Polignac number, because 31125408655 - 2²¹ = 31123311503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1296501 + ... + 1320289.

It is an arithmetic number, because the mean of its divisors is an integer number (3395641866).

Almost surely, 2^31125408655 is an apocalyptic number.

31125408655 is a deficient number, since it is larger than the sum of its proper divisors (9622293737).

31125408655 is an frugal number, since it uses more digits than its factorization.

31125408655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47594 (or 23805 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 31125408655 in words is "thirty-one billion, one hundred twenty-five million, four hundred eight thousand, six hundred fifty-five".