31312201932 has 216 divisors, whose sum is σ = 95025927360. Its totient is φ = 8597223360.

The previous prime is 31312201931. The next prime is 31312201937. The reversal of 31312201932 is 23910221313.

It is a junction number, because it is equal to n+sod(n) for n = 31312201896 and 31312201905.

It is not an unprimeable number, because it can be changed into a prime (31312201931) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3976263 + ... + 3984129.

Almost surely, 2^31312201932 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 31312201932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47512963680).

31312201932 is an abundant number, since it is smaller than the sum of its proper divisors (63713725428).

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

31312201932 is a wasteful number, since it uses less digits than its factorization.

31312201932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7953 (or 7925 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The spelling of 31312201932 in words is "thirty-one billion, three hundred twelve million, two hundred one thousand, nine hundred thirty-two".