31112020996 has 81 divisors (see below), whose sum is σ = 65064410901. Its totient is φ = 12979187424.

The previous prime is 31112020993. The next prime is 31112021027. The reversal of 31112020996 is 69902021113.

The square root of 31112020996 is 176386.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 29436264900 + 1675756096 = 171570^2 + 40936^2 .

It is not an unprimeable number, because it can be changed into a prime (31112020993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 106184226 + ... + 106184518.

Almost surely, 2^31112020996 is an apocalyptic number.

31112020996 is the 176386-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31112020996

31112020996 is an abundant number, since it is smaller than the sum of its proper divisors (33952389905).

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

31112020996 is an equidigital number, since it uses as much as digits as its factorization.

31112020996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 31112020996 in words is "thirty-one billion, one hundred twelve million, twenty thousand, nine hundred ninety-six".