31312200104 has 32 divisors (see below), whose sum is σ = 60523416000. Its totient is φ = 15179893632.

The previous prime is 31312200103. The next prime is 31312200149. The reversal of 31312200104 is 40100221313.

It is a super-2 number, since 2×31312200104² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31312200103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419924 + ... + 488835.

It is an arithmetic number, because the mean of its divisors is an integer number (1891356750).

Almost surely, 2^31312200104 is an apocalyptic number.

It is an amenable number.

31312200104 is a deficient number, since it is larger than the sum of its proper divisors (29211215896).

31312200104 is a wasteful number, since it uses less digits than its factorization.

31312200104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908897 (or 908893 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31312200104 its reverse (40100221313), we get a palindrome (71412421417).

The spelling of 31312200104 in words is "thirty-one billion, three hundred twelve million, two hundred thousand, one hundred four".