131231379 has 8 divisors (see below), whose sum is σ = 178698240. Its totient is φ = 85626056.

The previous prime is 131231371. The next prime is 131231393. The reversal of 131231379 is 973132131.

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 131231379 - 2³ = 131231371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131231371) 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, 465219 + ... + 465500.

It is an arithmetic number, because the mean of its divisors is an integer number (22337280).

Almost surely, 2^131231379 is an apocalyptic number.

131231379 is a deficient number, since it is larger than the sum of its proper divisors (47466861).

131231379 is an equidigital number, since it uses as much as digits as its factorization.

131231379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930769.

The product of its digits is 3402, while the sum is 30.

The square root of 131231379 is about 11455.6265214959. The cubic root of 131231379 is about 508.1741438529.

The spelling of 131231379 in words is "one hundred thirty-one million, two hundred thirty-one thousand, three hundred seventy-nine".