31202100012 has 24 divisors (see below), whose sum is σ = 75970331136. Its totient is φ = 9948495568.

The previous prime is 31202099969. The next prime is 31202100031. The reversal of 31202100012 is 21000120213.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56525268 + ... + 56525819.

It is an arithmetic number, because the mean of its divisors is an integer number (3165430464).

Almost surely, 2^31202100012 is an apocalyptic number.

It is an amenable number.

31202100012 is an abundant number, since it is smaller than the sum of its proper divisors (44768231124).

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

31202100012 is a wasteful number, since it uses less digits than its factorization.

31202100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113051117 (or 113051115 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 31202100012 its reverse (21000120213), we get a palindrome (52202220225).

The spelling of 31202100012 in words is "thirty-one billion, two hundred two million, one hundred thousand, twelve".