31023531412 has 6 divisors (see below), whose sum is σ = 54291179978. Its totient is φ = 15511765704.

The previous prime is 31023531403. The next prime is 31023531419. The reversal of 31023531412 is 21413532013.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27967210756 + 3056320656 = 167234^2 + 55284^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023531419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3877941423 + ... + 3877941430.

Almost surely, 2^31023531412 is an apocalyptic number.

It is an amenable number.

31023531412 is a deficient number, since it is larger than the sum of its proper divisors (23267648566).

31023531412 is a wasteful number, since it uses less digits than its factorization.

31023531412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755882857 (or 7755882855 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 31023531412 in words is "thirty-one billion, twenty-three million, five hundred thirty-one thousand, four hundred twelve".