231888613 has 8 divisors (see below), whose sum is σ = 253080000. Its totient is φ = 210715680.

The previous prime is 231888607. The next prime is 231888617. The reversal of 231888613 is 316888132.

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 231888613 - 2⁹ = 231888101 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 (231888617) 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, 43888 + ... + 48886.

It is an arithmetic number, because the mean of its divisors is an integer number (31635000).

Almost surely, 2^231888613 is an apocalyptic number.

It is an amenable number.

231888613 is a deficient number, since it is larger than the sum of its proper divisors (21191387).

231888613 is a wasteful number, since it uses less digits than its factorization.

231888613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227.

The product of its digits is 55296, while the sum is 40.

The square root of 231888613 is about 15227.8893153319. The cubic root of 231888613 is about 614.3650114197.

The spelling of 231888613 in words is "two hundred thirty-one million, eight hundred eighty-eight thousand, six hundred thirteen".