31032013100 has 36 divisors (see below), whose sum is σ = 73461240888. Its totient is φ = 11284368000.

The previous prime is 31032013099. The next prime is 31032013121. The reversal of 31032013100 is 131023013.

It is a super-2 number, since 2×31032013100² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14104361 + ... + 14106560.

Almost surely, 2^31032013100 is an apocalyptic number.

It is an amenable number.

31032013100 is an abundant number, since it is smaller than the sum of its proper divisors (42429227788).

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

31032013100 is a wasteful number, since it uses less digits than its factorization.

31032013100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28210946 (or 28210939 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 31032013100 its reverse (131023013), we get a palindrome (31163036113).

The spelling of 31032013100 in words is "thirty-one billion, thirty-two million, thirteen thousand, one hundred".