131201312202 has 24 divisors (see below), whose sum is σ = 284276194020. Its totient is φ = 43732742400.

The previous prime is 131201312189. The next prime is 131201312213. The reversal of 131201312202 is 202213102131.

131201312202 is a `hidden beast` number, since 1 + 312 + 0 + 131 + 220 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 129045474441 + 2155837761 = 359229^2 + 46431^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1362874 + ... + 1455962.

Almost surely, 2^131201312202 is an apocalyptic number.

131201312202 is an abundant number, since it is smaller than the sum of its proper divisors (153074881818).

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

131201312202 is a wasteful number, since it uses less digits than its factorization.

131201312202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171398 (or 171395 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131201312202 its reverse (202213102131), we get a palindrome (333414414333).

The spelling of 131201312202 in words is "one hundred thirty-one billion, two hundred one million, three hundred twelve thousand, two hundred two".