231977319 has 12 divisors (see below), whose sum is σ = 359801784. Its totient is φ = 132558384.

The previous prime is 231977269. The next prime is 231977323. The reversal of 231977319 is 913779132.

It is not a de Polignac number, because 231977319 - 2⁷ = 231977191 is a prime.

It is a super-2 number, since 2×231977319² = 107626953060855522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231977329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 788892 + ... + 789185.

It is an arithmetic number, because the mean of its divisors is an integer number (29983482).

Almost surely, 2^231977319 is an apocalyptic number.

231977319 is a deficient number, since it is larger than the sum of its proper divisors (127824465).

231977319 is a wasteful number, since it uses less digits than its factorization.

231977319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578094 (or 1578087 counting only the distinct ones).

The product of its digits is 71442, while the sum is 42.

The square root of 231977319 is about 15230.8016532289. The cubic root of 231977319 is about 614.4433405714.

The spelling of 231977319 in words is "two hundred thirty-one million, nine hundred seventy-seven thousand, three hundred nineteen".