231153979 has 8 divisors (see below), whose sum is σ = 275662080. Its totient is φ = 189517416.

The previous prime is 231153973. The next prime is 231153991. The reversal of 231153979 is 979351132.

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 231153979 - 2⁷ = 231153851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231153973) 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, 717709 + ... + 718030.

It is an arithmetic number, because the mean of its divisors is an integer number (34457760).

Almost surely, 2^231153979 is an apocalyptic number.

231153979 is a deficient number, since it is larger than the sum of its proper divisors (44508101).

231153979 is a wasteful number, since it uses less digits than its factorization.

231153979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435769.

The product of its digits is 51030, while the sum is 40.

The square root of 231153979 is about 15203.7488469127. The cubic root of 231153979 is about 613.7155460353.

The spelling of 231153979 in words is "two hundred thirty-one million, one hundred fifty-three thousand, nine hundred seventy-nine".