31020033012100 has 72 divisors (see below), whose sum is σ = 73445333447808. Its totient is φ = 11278098748800.

The previous prime is 31020033012091. The next prime is 31020033012121. The reversal of 31020033012100 is 121033002013.

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 23 ways as a sum of consecutive naturals, for example, 4104682 + ... + 8881918.

It is an arithmetic number, because the mean of its divisors is an integer number (1020074075664).

Almost surely, 2^{31020033012100} is an apocalyptic number.

It is an amenable number.

31020033012100 is an abundant number, since it is smaller than the sum of its proper divisors (42425300435708).

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

31020033012100 is a wasteful number, since it uses less digits than its factorization.

31020033012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783165 (or 4783158 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31020033012100 its reverse (121033002013), we get a palindrome (31141066014113).

The spelling of 31020033012100 in words is "thirty-one trillion, twenty billion, thirty-three million, twelve thousand, one hundred".