31300000131232 has 48 divisors (see below), whose sum is σ = 70428262447872. Its totient is φ = 13413664408320.

The previous prime is 31300000131223. The next prime is 31300000131233. The reversal of 31300000131232 is 23213100000313.

It is not an unprimeable number, because it can be changed into a prime (31300000131233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626633 + ... + 8077495.

It is an arithmetic number, because the mean of its divisors is an integer number (1467255467664).

Almost surely, 2^{31300000131232} is an apocalyptic number.

31300000131232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31300000131232 is an abundant number, since it is smaller than the sum of its proper divisors (39128262316640).

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

31300000131232 is a wasteful number, since it uses less digits than its factorization.

31300000131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472541 (or 6472533 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31300000131232 its reverse (23213100000313), we get a palindrome (54513100131545).

The spelling of 31300000131232 in words is "thirty-one trillion, three hundred billion, one hundred thirty-one thousand, two hundred thirty-two".