231797880 has 48 divisors (see below), whose sum is σ = 753344280. Its totient is φ = 61812672.

The previous prime is 231797879. The next prime is 231797947. The reversal of 231797880 is 88797132.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321582 + ... + 322301.

Almost surely, 2^231797880 is an apocalyptic number.

231797880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231797880 is an abundant number, since it is smaller than the sum of its proper divisors (521546400).

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

231797880 is a wasteful number, since it uses less digits than its factorization.

231797880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643900 (or 643893 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 231797880 is about 15224.9098519499. The cubic root of 231797880 is about 614.2848717184.

The spelling of 231797880 in words is "two hundred thirty-one million, seven hundred ninety-seven thousand, eight hundred eighty".