131962399 has 8 divisors (see below), whose sum is σ = 135739472. Its totient is φ = 128217600.

The previous prime is 131962393. The next prime is 131962423. The reversal of 131962399 is 993269131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131962399 - 2⁵ = 131962367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131962393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349 + ... + 16249.

It is an arithmetic number, because the mean of its divisors is an integer number (16967434).

Almost surely, 2^131962399 is an apocalyptic number.

131962399 is a deficient number, since it is larger than the sum of its proper divisors (3777073).

131962399 is a wasteful number, since it uses less digits than its factorization.

131962399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16137.

The product of its digits is 78732, while the sum is 43.

The square root of 131962399 is about 11487.4888030413. The cubic root of 131962399 is about 509.1159861922.

The spelling of 131962399 in words is "one hundred thirty-one million, nine hundred sixty-two thousand, three hundred ninety-nine".