231931379 has 8 divisors (see below), whose sum is σ = 247644672. Its totient is φ = 216687240.

The previous prime is 231931363. The next prime is 231931397. The reversal of 231931379 is 973139132.

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 231931379 - 2⁴ = 231931363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231930379) 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, 116267 + ... + 118244.

It is an arithmetic number, because the mean of its divisors is an integer number (30955584).

Almost surely, 2^231931379 is an apocalyptic number.

231931379 is a deficient number, since it is larger than the sum of its proper divisors (15713293).

231931379 is a wasteful number, since it uses less digits than its factorization.

231931379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234577.

The product of its digits is 30618, while the sum is 38.

The square root of 231931379 is about 15229.2934504527. The cubic root of 231931379 is about 614.4027771365.

The spelling of 231931379 in words is "two hundred thirty-one million, nine hundred thirty-one thousand, three hundred seventy-nine".