131836407 has 12 divisors (see below), whose sum is σ = 181991160. Its totient is φ = 84791280.

The previous prime is 131836373. The next prime is 131836417. The reversal of 131836407 is 704638131.

It is a de Polignac number, because none of the positive numbers 2^k-131836407 is a prime.

It is a super-3 number, since 3×131836407³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131836417) 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, 106482 + ... + 107712.

It is an arithmetic number, because the mean of its divisors is an integer number (15165930).

Almost surely, 2^131836407 is an apocalyptic number.

131836407 is a deficient number, since it is larger than the sum of its proper divisors (50154753).

131836407 is an frugal number, since it uses more digits than its factorization.

131836407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 131836407 is about 11482.0036143523. The cubic root of 131836407 is about 508.9539072799.

The spelling of 131836407 in words is "one hundred thirty-one million, eight hundred thirty-six thousand, four hundred seven".