131492469 has 4 divisors (see below), whose sum is σ = 175323296. Its totient is φ = 87661644.

The previous prime is 131492447. The next prime is 131492479. The reversal of 131492469 is 964294131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 964294131 = 3 ⋅321431377.

It is not a de Polignac number, because 131492469 - 2⁵ = 131492437 is a prime.

It is a super-2 number, since 2×131492469² = 34580538807431922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131492479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21915409 + ... + 21915414.

It is an arithmetic number, because the mean of its divisors is an integer number (43830824).

Almost surely, 2^131492469 is an apocalyptic number.

It is an amenable number.

131492469 is a deficient number, since it is larger than the sum of its proper divisors (43830827).

131492469 is an equidigital number, since it uses as much as digits as its factorization.

131492469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43830826.

The product of its digits is 46656, while the sum is 39.

The square root of 131492469 is about 11467.0165692738. The cubic root of 131492469 is about 508.5109314292.

The spelling of 131492469 in words is "one hundred thirty-one million, four hundred ninety-two thousand, four hundred sixty-nine".