31201023012100 has 36 divisors (see below), whose sum is σ = 71269705200400. Its totient is φ = 11823545561760.

The previous prime is 31201023012067. The next prime is 31201023012101. The reversal of 31201023012100 is 121032010213.

It is not an unprimeable number, because it can be changed into a prime (31201023012101) by changing a digit.

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, 8210793630 + ... + 8210797429.

Almost surely, 2^{31201023012100} is an apocalyptic number.

It is an amenable number.

31201023012100 is an abundant number, since it is smaller than the sum of its proper divisors (40068682188300).

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

31201023012100 is a wasteful number, since it uses less digits than its factorization.

31201023012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16421591092 (or 16421591085 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31201023012100 its reverse (121032010213), we get a palindrome (31322055022313).

The spelling of 31201023012100 in words is "thirty-one trillion, two hundred one billion, twenty-three million, twelve thousand, one hundred".