31312101024 has 72 divisors (see below), whose sum is σ = 89125856820. Its totient is φ = 10427747328.

The previous prime is 31312101019. The next prime is 31312101047. The reversal of 31312101024 is 42010121313.

It can be written as a sum of positive squares in 2 ways, for example, as 31282289424 + 29811600 = 176868^2 + 5460^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31312100988 and 31312101006.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 266382 + ... + 365490.

Almost surely, 2^31312101024 is an apocalyptic number.

It is an amenable number.

31312101024 is an abundant number, since it is smaller than the sum of its proper divisors (57813755796).

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

31312101024 is a wasteful number, since it uses less digits than its factorization.

31312101024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100222 (or 100211 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31312101024 its reverse (42010121313), we get a palindrome (73322222337).

The spelling of 31312101024 in words is "thirty-one billion, three hundred twelve million, one hundred one thousand, twenty-four".