31113002100 has 36 divisors (see below), whose sum is σ = 90020286944. Its totient is φ = 8296800480.

The previous prime is 31113002057. The next prime is 31113002111. The reversal of 31113002100 is 120031113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51854704 + ... + 51855303.

Almost surely, 2^31113002100 is an apocalyptic number.

31113002100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31113002100 is an abundant number, since it is smaller than the sum of its proper divisors (58907284844).

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

31113002100 is a wasteful number, since it uses less digits than its factorization.

31113002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103710024 (or 103710017 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 31113002100 its reverse (120031113), we get a palindrome (31233033213).

The spelling of 31113002100 in words is "thirty-one billion, one hundred thirteen million, two thousand, one hundred".