31004220112 has 40 divisors (see below), whose sum is σ = 61338357576. Its totient is φ = 15178070016.

The previous prime is 31004220089. The next prime is 31004220119. The reversal of 31004220112 is 21102240013.

It can be written as a sum of positive squares in 4 ways, for example, as 4185572416 + 26818647696 = 64696^2 + 163764^2 .

It is a super-2 number, since 2×31004220112² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31004220119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63138 + ... + 256894.

Almost surely, 2^31004220112 is an apocalyptic number.

It is an amenable number.

31004220112 is a deficient number, since it is larger than the sum of its proper divisors (30334137464).

31004220112 is a wasteful number, since it uses less digits than its factorization.

31004220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193975 (or 193969 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31004220112 its reverse (21102240013), we get a palindrome (52106460125).

The spelling of 31004220112 in words is "thirty-one billion, four million, two hundred twenty thousand, one hundred twelve".