31421401413424 has 40 divisors (see below), whose sum is σ = 66811101815808. Its totient is φ = 14196931490880.

The previous prime is 31421401413421. The next prime is 31421401413463. The reversal of 31421401413424 is 42431410412413.

It is a self number, because there is not a number n which added to its sum of digits gives 31421401413424.

It is not an unprimeable number, because it can be changed into a prime (31421401413421) 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, 534493632 + ... + 534552415.

Almost surely, 2^{31421401413424} is an apocalyptic number.

It is an amenable number.

31421401413424 is an abundant number, since it is smaller than the sum of its proper divisors (35389700402384).

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

31421401413424 is a wasteful number, since it uses less digits than its factorization.

31421401413424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069046233 (or 1069046227 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 31421401413424 its reverse (42431410412413), we get a palindrome (73852811825837).

The spelling of 31421401413424 in words is "thirty-one trillion, four hundred twenty-one billion, four hundred one million, four hundred thirteen thousand, four hundred twenty-four".