231039977 has 8 divisors (see below), whose sum is σ = 265051776. Its totient is φ = 197279712.

The previous prime is 231039971. The next prime is 231040009. The reversal of 231039977 is 779930132.

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

It is not a de Polignac number, because 231039977 - 2²⁰ = 229991401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231039971) 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, 60908 + ... + 64589.

It is an arithmetic number, because the mean of its divisors is an integer number (33131472).

Almost surely, 2^231039977 is an apocalyptic number.

It is an amenable number.

231039977 is a deficient number, since it is larger than the sum of its proper divisors (34011799).

231039977 is a wasteful number, since it uses less digits than its factorization.

231039977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125767.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 231039977 is about 15199.9992434210. Note that the first 3 decimals coincide. The cubic root of 231039977 is about 613.6146373898.

The spelling of 231039977 in words is "two hundred thirty-one million, thirty-nine thousand, nine hundred seventy-seven".