131793477 has 4 divisors (see below), whose sum is σ = 175724640. Its totient is φ = 87862316.

The previous prime is 131793463. The next prime is 131793479. The reversal of 131793477 is 774397131.

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 a cyclic number.

It is not a de Polignac number, because 131793477 - 2⁴ = 131793461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131793479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21965577 + ... + 21965582.

It is an arithmetic number, because the mean of its divisors is an integer number (43931160).

Almost surely, 2^131793477 is an apocalyptic number.

It is an amenable number.

131793477 is a deficient number, since it is larger than the sum of its proper divisors (43931163).

131793477 is an equidigital number, since it uses as much as digits as its factorization.

131793477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43931162.

The product of its digits is 111132, while the sum is 42.

The square root of 131793477 is about 11480.1340148972. The cubic root of 131793477 is about 508.8986575863.

The spelling of 131793477 in words is "one hundred thirty-one million, seven hundred ninety-three thousand, four hundred seventy-seven".