31140055125 has 56 divisors (see below), whose sum is σ = 58267698840. Its totient is φ = 16607980800.

The previous prime is 31140055103. The next prime is 31140055153. The reversal of 31140055125 is 52155004113.

31140055125 is a `hidden beast` number, since 3 + 1 + 140 + 0 + 5 + 512 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 92910321 + 31047144804 = 9639^2 + 176202^2 .

It is not a de Polignac number, because 31140055125 - 2¹² = 31140051029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 79740 + ... + 261989.

Almost surely, 2^31140055125 is an apocalyptic number.

It is an amenable number.

31140055125 is a deficient number, since it is larger than the sum of its proper divisors (27127643715).

31140055125 is an frugal number, since it uses more digits than its factorization.

31140055125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341762 (or 341737 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 31140055125 its reverse (52155004113), we get a palindrome (83295059238).

The spelling of 31140055125 in words is "thirty-one billion, one hundred forty million, fifty-five thousand, one hundred twenty-five".