31431113541325 has 24 divisors (see below), whose sum is σ = 40390917527880. Its totient is φ = 24234238560000.

The previous prime is 31431113541283. The next prime is 31431113541343. The reversal of 31431113541325 is 52314531113413.

It can be written as a sum of positive squares in 12 ways, for example, as 8292723924681 + 23138389616644 = 2879709^2 + 4810238^2 .

It is not a de Polignac number, because 31431113541325 - 2²⁵ = 31431079986893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38512926 + ... + 39320575.

It is an arithmetic number, because the mean of its divisors is an integer number (1682954896995).

Almost surely, 2^{31431113541325} is an apocalyptic number.

It is an amenable number.

31431113541325 is a deficient number, since it is larger than the sum of its proper divisors (8959803986555).

31431113541325 is a wasteful number, since it uses less digits than its factorization.

31431113541325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77834097 (or 77834092 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

Adding to 31431113541325 its reverse (52314531113413), we get a palindrome (83745644654738).

The spelling of 31431113541325 in words is "thirty-one trillion, four hundred thirty-one billion, one hundred thirteen million, five hundred forty-one thousand, three hundred twenty-five".