131000031201402 has 72 divisors (see below), whose sum is σ = 312118001470548. Its totient is φ = 39679695538560.

The previous prime is 131000031201373. The next prime is 131000031201443. The reversal of 131000031201402 is 204102130000131.

131000031201402 is a `hidden beast` number, since 1 + 31 + 0 + 0 + 0 + 0 + 31 + 201 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 128039838689961 + 2960192511441 = 11315469^2 + 1720521^2 .

It is a super-2 number, since 2×131000031201402² (a number of 29 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8089633 + ... + 18095364.

Almost surely, 2^{131000031201402} is an apocalyptic number.

131000031201402 is an abundant number, since it is smaller than the sum of its proper divisors (181117970269146).

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

131000031201402 is a wasteful number, since it uses less digits than its factorization.

131000031201402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26187324 (or 26187310 counting only the distinct ones).

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

Adding to 131000031201402 its reverse (204102130000131), we get a palindrome (335102161201533).

The spelling of 131000031201402 in words is "one hundred thirty-one trillion, thirty-one million, two hundred one thousand, four hundred two".