231380877 has 16 divisors (see below), whose sum is σ = 379702400. Its totient is φ = 122046912.

The previous prime is 231380861. The next prime is 231380899. The reversal of 231380877 is 778083132.

It is not a de Polignac number, because 231380877 - 2⁴ = 231380861 is a prime.

It is a super-2 number, since 2×231380877² = 107074220482578258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231380837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423502 + ... + 424047.

It is an arithmetic number, because the mean of its divisors is an integer number (23731400).

Almost surely, 2^231380877 is an apocalyptic number.

It is an amenable number.

231380877 is a deficient number, since it is larger than the sum of its proper divisors (148321523).

231380877 is a wasteful number, since it uses less digits than its factorization.

231380877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847572.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 231380877 is about 15211.2089263148. The cubic root of 231380877 is about 613.9162856650.

The spelling of 231380877 in words is "two hundred thirty-one million, three hundred eighty thousand, eight hundred seventy-seven".