31023201021100 has 72 divisors (see below), whose sum is σ = 67609928225840. Its totient is φ = 12356008807680.

The previous prime is 31023201021083. The next prime is 31023201021101. The reversal of 31023201021100 is 112010232013.

It is not an unprimeable number, because it can be changed into a prime (31023201021101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22416874 + ... + 23760526.

Almost surely, 2^{31023201021100} is an apocalyptic number.

It is an amenable number.

31023201021100 is an abundant number, since it is smaller than the sum of its proper divisors (36586727204740).

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

31023201021100 is a wasteful number, since it uses less digits than its factorization.

31023201021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344659 (or 1344652 counting only the distinct ones).

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

Adding to 31023201021100 its reverse (112010232013), we get a palindrome (31135211253113).

The spelling of 31023201021100 in words is "thirty-one trillion, twenty-three billion, two hundred one million, twenty-one thousand, one hundred".