231377880 has 128 divisors (see below), whose sum is σ = 716829120. Its totient is φ = 59719680.

The previous prime is 231377873. The next prime is 231377891. The reversal of 231377880 is 88773132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534144 + ... + 534576.

Almost surely, 2^231377880 is an apocalyptic number.

231377880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231377880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358414560).

231377880 is an abundant number, since it is smaller than the sum of its proper divisors (485451240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231377880 is a wasteful number, since it uses less digits than its factorization.

231377880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 577 counting only the distinct ones).

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

The square root of 231377880 is about 15211.1104131158. The cubic root of 231377880 is about 613.9136350353.

The spelling of 231377880 in words is "two hundred thirty-one million, three hundred seventy-seven thousand, eight hundred eighty".