231823857 has 8 divisors (see below), whose sum is σ = 309537280. Its totient is φ = 154329840.

The previous prime is 231823853. The next prime is 231823861. The reversal of 231823857 is 758328132.

It is an interprime number because it is at equal distance from previous prime (231823853) and next prime (231823861).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231823857 - 2² = 231823853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231823853) 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, 52369 + ... + 56622.

It is an arithmetic number, because the mean of its divisors is an integer number (38692160).

Almost surely, 2^231823857 is an apocalyptic number.

It is an amenable number.

231823857 is a deficient number, since it is larger than the sum of its proper divisors (77713423).

231823857 is a wasteful number, since it uses less digits than its factorization.

231823857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109703.

The product of its digits is 80640, while the sum is 39.

The square root of 231823857 is about 15225.7629365494. The cubic root of 231823857 is about 614.3078179767.

The spelling of 231823857 in words is "two hundred thirty-one million, eight hundred twenty-three thousand, eight hundred fifty-seven".