202313123112 has 64 divisors (see below), whose sum is σ = 528626880000. Its totient is φ = 64401315264.

The previous prime is 202313123063. The next prime is 202313123141. The reversal of 202313123112 is 211321313202.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45639 + ... + 637737.

It is an arithmetic number, because the mean of its divisors is an integer number (8259795000).

Almost surely, 2^202313123112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202313123112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264313440000).

202313123112 is an abundant number, since it is smaller than the sum of its proper divisors (326313756888).

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

202313123112 is a wasteful number, since it uses less digits than its factorization.

202313123112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592750 (or 592746 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 202313123112 its reverse (211321313202), we get a palindrome (413634436314).

The spelling of 202313123112 in words is "two hundred two billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred twelve".