131429597 has 4 divisors (see below), whose sum is σ = 141539580. Its totient is φ = 121319616.

The previous prime is 131429581. The next prime is 131429603. The reversal of 131429597 is 795924131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21724921 + 109704676 = 4661^2 + 10474^2 .

It is a cyclic number.

It is not a de Polignac number, because 131429597 - 2⁴ = 131429581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131429297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054972 + ... + 5054997.

It is an arithmetic number, because the mean of its divisors is an integer number (35384895).

Almost surely, 2^131429597 is an apocalyptic number.

It is an amenable number.

131429597 is a deficient number, since it is larger than the sum of its proper divisors (10109983).

131429597 is a wasteful number, since it uses less digits than its factorization.

131429597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10109982.

The product of its digits is 68040, while the sum is 41.

The square root of 131429597 is about 11464.2748135240. The cubic root of 131429597 is about 508.4298717902.

The spelling of 131429597 in words is "one hundred thirty-one million, four hundred twenty-nine thousand, five hundred ninety-seven".