131407279 has 4 divisors (see below), whose sum is σ = 132410520. Its totient is φ = 130404040.

The previous prime is 131407247. The next prime is 131407291. The reversal of 131407279 is 972704131.

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 131407279 - 2⁵ = 131407247 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 (131407079) 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, 501424 + ... + 501685.

It is an arithmetic number, because the mean of its divisors is an integer number (33102630).

Almost surely, 2^131407279 is an apocalyptic number.

131407279 is a deficient number, since it is larger than the sum of its proper divisors (1003241).

131407279 is a wasteful number, since it uses less digits than its factorization.

131407279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003240.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 131407279 is about 11463.3014005565. The cubic root of 131407279 is about 508.4010914127.

The spelling of 131407279 in words is "one hundred thirty-one million, four hundred seven thousand, two hundred seventy-nine".