131201131120402 has 48 divisors (see below), whose sum is σ = 231231004833240. Its totient is φ = 55664685216000.

The previous prime is 131201131120373. The next prime is 131201131120427. The reversal of 131201131120402 is 204021131102131.

It can be written as a sum of positive squares in 4 ways, for example, as 125982643191601 + 5218487928801 = 11224199^2 + 2284401^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71437702 + ... + 73251262.

Almost surely, 2^{131201131120402} is an apocalyptic number.

131201131120402 is a deficient number, since it is larger than the sum of its proper divisors (100029873712838).

131201131120402 is a wasteful number, since it uses less digits than its factorization.

131201131120402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820987 (or 1820980 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 131201131120402 its reverse (204021131102131), we get a palindrome (335222262222533).

The spelling of 131201131120402 in words is "one hundred thirty-one trillion, two hundred one billion, one hundred thirty-one million, one hundred twenty thousand, four hundred two".