31222411420 has 12 divisors (see below), whose sum is σ = 65567064024. Its totient is φ = 12488964560.

The previous prime is 31222411399. The next prime is 31222411541. The reversal of 31222411420 is 2411422213.

It is a junction number, because it is equal to n+sod(n) for n = 31222411391 and 31222411400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780560266 + ... + 780560305.

It is an arithmetic number, because the mean of its divisors is an integer number (5463922002).

Almost surely, 2^31222411420 is an apocalyptic number.

It is an amenable number.

31222411420 is an abundant number, since it is smaller than the sum of its proper divisors (34344652604).

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

31222411420 is a wasteful number, since it uses less digits than its factorization.

31222411420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561120580 (or 1561120578 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31222411420 its reverse (2411422213), we get a palindrome (33633833633).

The spelling of 31222411420 in words is "thirty-one billion, two hundred twenty-two million, four hundred eleven thousand, four hundred twenty".