31431323413399 has 8 divisors (see below), whose sum is σ = 38684705739680. Its totient is φ = 24868739403936.

The previous prime is 31431323413379. The next prime is 31431323413409. The reversal of 31431323413399 is 99331432313413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31431323413399 - 2⁵ = 31431323413367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31431323413309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172699579104 + ... + 172699579285.

It is an arithmetic number, because the mean of its divisors is an integer number (4835588217460).

Almost surely, 2^{31431323413399} is an apocalyptic number.

31431323413399 is a deficient number, since it is larger than the sum of its proper divisors (7253382326281).

31431323413399 is a wasteful number, since it uses less digits than its factorization.

31431323413399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345399158409.

The product of its digits is 1889568, while the sum is 49.

The spelling of 31431323413399 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred twenty-three million, four hundred thirteen thousand, three hundred ninety-nine".