131828493 has 4 divisors (see below), whose sum is σ = 175771328. Its totient is φ = 87885660.

The previous prime is 131828449. The next prime is 131828507. The reversal of 131828493 is 394828131.

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.

It is not a de Polignac number, because 131828493 - 2⁸ = 131828237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131828443) 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, 21971413 + ... + 21971418.

It is an arithmetic number, because the mean of its divisors is an integer number (43942832).

Almost surely, 2^131828493 is an apocalyptic number.

It is an amenable number.

131828493 is a deficient number, since it is larger than the sum of its proper divisors (43942835).

131828493 is an equidigital number, since it uses as much as digits as its factorization.

131828493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43942834.

The product of its digits is 41472, while the sum is 39.

The square root of 131828493 is about 11481.6589829171. The cubic root of 131828493 is about 508.9437230879.

The spelling of 131828493 in words is "one hundred thirty-one million, eight hundred twenty-eight thousand, four hundred ninety-three".