31431323413398 has 16 divisors (see below), whose sum is σ = 62862856925616. Its totient is φ = 10477072788000.

The previous prime is 31431323413379. The next prime is 31431323413409. The reversal of 31431323413398 is 89331432313413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6774861 + ... + 10428872.

It is an arithmetic number, because the mean of its divisors is an integer number (3928928557851).

Almost surely, 2^{31431323413398} is an apocalyptic number.

31431323413398 is an abundant number, since it is smaller than the sum of its proper divisors (31431533512218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31431323413398 is a wasteful number, since it uses less digits than its factorization.

31431323413398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17508239.

The product of its digits is 1679616, while the sum is 48.

The spelling of 31431323413398 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred twenty-three million, four hundred thirteen thousand, three hundred ninety-eight".