131387474349 has 12 divisors (see below), whose sum is σ = 190259952636. Its totient is φ = 87371013312.

The previous prime is 131387474333. The next prime is 131387474369. The reversal of 131387474349 is 943474783131.

It is a happy number.

131387474349 is a `hidden beast` number, since 1 + 3 + 138 + 7 + 474 + 34 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53347140900 + 78040333449 = 230970^2 + 279357^2 .

It is not a de Polignac number, because 131387474349 - 2⁴ = 131387474333 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 131387474295 and 131387474304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131387474329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18382584 + ... + 18389729.

It is an arithmetic number, because the mean of its divisors is an integer number (15854996053).

Almost surely, 2^131387474349 is an apocalyptic number.

It is an amenable number.

131387474349 is a deficient number, since it is larger than the sum of its proper divisors (58872478287).

131387474349 is a wasteful number, since it uses less digits than its factorization.

131387474349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36772716 (or 36772713 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 131387474349 in words is "one hundred thirty-one billion, three hundred eighty-seven million, four hundred seventy-four thousand, three hundred forty-nine".