131925399 has 4 divisors (see below), whose sum is σ = 175900536. Its totient is φ = 87950264.

The previous prime is 131925397. The next prime is 131925403. The reversal of 131925399 is 993529131.

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

It is a cyclic number.

It is not a de Polignac number, because 131925399 - 2¹ = 131925397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131925399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131925397) 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, 21987564 + ... + 21987569.

It is an arithmetic number, because the mean of its divisors is an integer number (43975134).

Almost surely, 2^131925399 is an apocalyptic number.

131925399 is a deficient number, since it is larger than the sum of its proper divisors (43975137).

131925399 is an equidigital number, since it uses as much as digits as its factorization.

131925399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43975136.

The product of its digits is 65610, while the sum is 42.

The square root of 131925399 is about 11485.8782424332. The cubic root of 131925399 is about 509.0683992724.

The spelling of 131925399 in words is "one hundred thirty-one million, nine hundred twenty-five thousand, three hundred ninety-nine".