231778023 has 8 divisors (see below), whose sum is σ = 309668736. Its totient is φ = 154203000.

The previous prime is 231778007. The next prime is 231778031. The reversal of 231778023 is 320877132.

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

It is not a de Polignac number, because 231778023 - 2⁴ = 231778007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231778003) 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, 77203 + ... + 80148.

It is an arithmetic number, because the mean of its divisors is an integer number (38708592).

Almost surely, 2^231778023 is an apocalyptic number.

231778023 is a deficient number, since it is larger than the sum of its proper divisors (77890713).

231778023 is a wasteful number, since it uses less digits than its factorization.

231778023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157845.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 231778023 is about 15224.2577158954. The cubic root of 231778023 is about 614.2673302824.

The spelling of 231778023 in words is "two hundred thirty-one million, seven hundred seventy-eight thousand, twenty-three".