31240004412 has 12 divisors (see below), whose sum is σ = 72893343656. Its totient is φ = 10413334800.

The previous prime is 31240004401. The next prime is 31240004413. The reversal of 31240004412 is 21440004213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240004413) 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, 1301666839 + ... + 1301666862.

Almost surely, 2^31240004412 is an apocalyptic number.

It is an amenable number.

31240004412 is an abundant number, since it is smaller than the sum of its proper divisors (41653339244).

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

31240004412 is a wasteful number, since it uses less digits than its factorization.

31240004412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603333708 (or 2603333706 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31240004412 its reverse (21440004213), we get a palindrome (52680008625).

The spelling of 31240004412 in words is "thirty-one billion, two hundred forty million, four thousand, four hundred twelve".