131937429 has 16 divisors (see below), whose sum is σ = 189790272. Its totient is φ = 81045888.

The previous prime is 131937419. The next prime is 131937433. The reversal of 131937429 is 924739131.

It is not a de Polignac number, because 131937429 - 2⁸ = 131937173 is a prime.

It is a super-2 number, since 2×131937429² = 34814970342260082, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131937409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21322 + ... + 26804.

It is an arithmetic number, because the mean of its divisors is an integer number (11861892).

Almost surely, 2^131937429 is an apocalyptic number.

It is an amenable number.

131937429 is a deficient number, since it is larger than the sum of its proper divisors (57852843).

131937429 is a wasteful number, since it uses less digits than its factorization.

131937429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6116.

The product of its digits is 40824, while the sum is 39.

The square root of 131937429 is about 11486.4019170496. The cubic root of 131937429 is about 509.0838724281.

The spelling of 131937429 in words is "one hundred thirty-one million, nine hundred thirty-seven thousand, four hundred twenty-nine".