31371633447420 has 48 divisors (see below), whose sum is σ = 100389227033088. Its totient is φ = 7170659073600.

The previous prime is 31371633447383. The next prime is 31371633447431. The reversal of 31371633447420 is 2474433617313.

31371633447420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 31371633447420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37347182256 + ... + 37347183095.

It is an arithmetic number, because the mean of its divisors is an integer number (2091442229856).

Almost surely, 2^{31371633447420} is an apocalyptic number.

31371633447420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31371633447420 is an abundant number, since it is smaller than the sum of its proper divisors (69017593585668).

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

31371633447420 is a wasteful number, since it uses less digits than its factorization.

31371633447420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74694365370 (or 74694365368 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 48.

The spelling of 31371633447420 in words is "thirty-one trillion, three hundred seventy-one billion, six hundred thirty-three million, four hundred forty-seven thousand, four hundred twenty".