31520112032 has 12 divisors (see below), whose sum is σ = 62055220626. Its totient is φ = 15760056000.

The previous prime is 31520112031. The next prime is 31520112037. The reversal of 31520112032 is 23021102513.

It can be written as a sum of positive squares in only one way, i.e., 29654217616 + 1865894416 = 172204^2 + 43196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31520111995 and 31520112013.

It is not an unprimeable number, because it can be changed into a prime (31520112031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492501719 + ... + 492501782.

Almost surely, 2^31520112032 is an apocalyptic number.

31520112032 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31520112032 is a deficient number, since it is larger than the sum of its proper divisors (30535108594).

31520112032 is an equidigital number, since it uses as much as digits as its factorization.

31520112032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985003511 (or 985003503 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 31520112032 its reverse (23021102513), we get a palindrome (54541214545).

The spelling of 31520112032 in words is "thirty-one billion, five hundred twenty million, one hundred twelve thousand, thirty-two".