31475879125 has 8 divisors (see below), whose sum is σ = 39281897304. Its totient is φ = 25180703200.

The previous prime is 31475879087. The next prime is 31475879167. The reversal of 31475879125 is 52197857413.

It can be written as a sum of positive squares in 4 ways, for example, as 1119437764 + 30356441361 = 33458^2 + 174231^2 .

It is not a de Polignac number, because 31475879125 - 2⁷ = 31475878997 is a prime.

It is a super-2 number, since 2×31475879125² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125903392 + ... + 125903641.

It is an arithmetic number, because the mean of its divisors is an integer number (4910237163).

Almost surely, 2^31475879125 is an apocalyptic number.

It is an amenable number.

31475879125 is a deficient number, since it is larger than the sum of its proper divisors (7806018179).

31475879125 is an equidigital number, since it uses as much as digits as its factorization.

31475879125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251807048 (or 251807038 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The spelling of 31475879125 in words is "thirty-one billion, four hundred seventy-five million, eight hundred seventy-nine thousand, one hundred twenty-five".