31319655125 has 36 divisors (see below), whose sum is σ = 42993196428. Its totient is φ = 22762102000.

The previous prime is 31319655097. The next prime is 31319655131. The reversal of 31319655125 is 52155691313.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1002228964 + 30317426161 = 31658^2 + 174119^2 .

It is not a de Polignac number, because 31319655125 - 2¹² = 31319651029 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 35 ways as a sum of consecutive naturals, for example, 21764156 + ... + 21765594.

Almost surely, 2^31319655125 is an apocalyptic number.

It is an amenable number.

31319655125 is a deficient number, since it is larger than the sum of its proper divisors (11673541303).

31319655125 is an frugal number, since it uses more digits than its factorization.

31319655125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915 (or 1455 counting only the distinct ones).

The product of its digits is 121500, while the sum is 41.

The spelling of 31319655125 in words is "thirty-one billion, three hundred nineteen million, six hundred fifty-five thousand, one hundred twenty-five".