31332013132 has 48 divisors (see below), whose sum is σ = 66538463040. Its totient is φ = 12602253312.

The previous prime is 31332013117. The next prime is 31332013147. The reversal of 31332013132 is 23131023313.

It is an interprime number because it is at equal distance from previous prime (31332013117) and next prime (31332013147).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74794 + ... + 261262.

It is an arithmetic number, because the mean of its divisors is an integer number (1386217980).

Almost surely, 2^31332013132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31332013132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33269231520).

31332013132 is an abundant number, since it is smaller than the sum of its proper divisors (35206449908).

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

31332013132 is a wasteful number, since it uses less digits than its factorization.

31332013132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186850 (or 186848 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31332013132 its reverse (23131023313), we get a palindrome (54463036445).

The spelling of 31332013132 in words is "thirty-one billion, three hundred thirty-two million, thirteen thousand, one hundred thirty-two".