31001233420 has 12 divisors (see below), whose sum is σ = 65102590224. Its totient is φ = 12400493360.

The previous prime is 31001233411. The next prime is 31001233433. The reversal of 31001233420 is 2433210013.

It is a super-2 number, since 2×31001233420² (a number of 22 digits) contains 22 as substring.

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, 775030816 + ... + 775030855.

It is an arithmetic number, because the mean of its divisors is an integer number (5425215852).

Almost surely, 2^31001233420 is an apocalyptic number.

It is an amenable number.

31001233420 is an abundant number, since it is smaller than the sum of its proper divisors (34101356804).

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

31001233420 is a wasteful number, since it uses less digits than its factorization.

31001233420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550061680 (or 1550061678 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31001233420 its reverse (2433210013), we get a palindrome (33434443433).

The spelling of 31001233420 in words is "thirty-one billion, one million, two hundred thirty-three thousand, four hundred twenty".