31401431421399 has 96 divisors (see below), whose sum is σ = 49840225344000. Its totient is φ = 18935273564928.

The previous prime is 31401431421377. The next prime is 31401431421407. The reversal of 31401431421399 is 99312413410413.

31401431421399 is a `hidden beast` number, since 3 + 1 + 40 + 1 + 431 + 42 + 139 + 9 = 666.

It is not a de Polignac number, because 31401431421399 - 2¹⁵ = 31401431388631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401431421599) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 676163422 + ... + 676209860.

It is an arithmetic number, because the mean of its divisors is an integer number (519169014000).

Almost surely, 2^{31401431421399} is an apocalyptic number.

31401431421399 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

31401431421399 is a deficient number, since it is larger than the sum of its proper divisors (18438793922601).

31401431421399 is a wasteful number, since it uses less digits than its factorization.

31401431421399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47109 (or 47106 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 31401431421399 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, four hundred twenty-one thousand, three hundred ninety-nine".