31420040211224 has 64 divisors (see below), whose sum is σ = 69704627155200. Its totient is φ = 12991261497984.

The previous prime is 31420040211163. The next prime is 31420040211377. The reversal of 31420040211224 is 42211204002413.

It is a junction number, because it is equal to n+sod(n) for n = 31420040211193 and 31420040211202.

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, 5456282 + ... + 9623465.

It is an arithmetic number, because the mean of its divisors is an integer number (1089134799300).

Almost surely, 2^{31420040211224} is an apocalyptic number.

It is an amenable number.

31420040211224 is an abundant number, since it is smaller than the sum of its proper divisors (38284586943976).

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

31420040211224 is a wasteful number, since it uses less digits than its factorization.

31420040211224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15081072 (or 15081068 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 31420040211224 its reverse (42211204002413), we get a palindrome (73631244213637).

The spelling of 31420040211224 in words is "thirty-one trillion, four hundred twenty billion, forty million, two hundred eleven thousand, two hundred twenty-four".