31347732012 has 48 divisors (see below), whose sum is σ = 78317578080. Its totient is φ = 9724076032.

The previous prime is 31347732007. The next prime is 31347732019. The reversal of 31347732012 is 21023774313.

It is not an unprimeable number, because it can be changed into a prime (31347732019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 845133 + ... + 881444.

It is an arithmetic number, because the mean of its divisors is an integer number (1631616210).

Almost surely, 2^31347732012 is an apocalyptic number.

It is an amenable number.

31347732012 is an abundant number, since it is smaller than the sum of its proper divisors (46969846068).

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

31347732012 is a wasteful number, since it uses less digits than its factorization.

31347732012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726690 (or 1726688 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 33.

The spelling of 31347732012 in words is "thirty-one billion, three hundred forty-seven million, seven hundred thirty-two thousand, twelve".