31400021032424 has 16 divisors (see below), whose sum is σ = 64227315748320. Its totient is φ = 14272736832880.

The previous prime is 31400021032421. The next prime is 31400021032433. The reversal of 31400021032424 is 42423012000413.

It is a super-2 number, since 2×31400021032424² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31400021032393 and 31400021032402.

It is not an unprimeable number, because it can be changed into a prime (31400021032421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178409210324 + ... + 178409210499.

It is an arithmetic number, because the mean of its divisors is an integer number (4014207234270).

Almost surely, 2^{31400021032424} is an apocalyptic number.

It is an amenable number.

31400021032424 is an abundant number, since it is smaller than the sum of its proper divisors (32827294715896).

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

31400021032424 is a wasteful number, since it uses less digits than its factorization.

31400021032424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356818420840 (or 356818420836 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31400021032424 its reverse (42423012000413), we get a palindrome (73823033032837).

The spelling of 31400021032424 in words is "thirty-one trillion, four hundred billion, twenty-one million, thirty-two thousand, four hundred twenty-four".