231770880 has 432 divisors, whose sum is σ = 918328320. Its totient is φ = 53452800.

The previous prime is 231770879. The next prime is 231770887. The reversal of 231770880 is 88077132.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231770887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3928291 + ... + 3928349.

It is an arithmetic number, because the mean of its divisors is an integer number (2125760).

Almost surely, 2^231770880 is an apocalyptic number.

231770880 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 231770880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459164160).

231770880 is an abundant number, since it is smaller than the sum of its proper divisors (686557440).

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

231770880 is a wasteful number, since it uses less digits than its factorization.

231770880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 231770880 is about 15224.0231213697. The cubic root of 231770880 is about 614.2610199968.

The spelling of 231770880 in words is "two hundred thirty-one million, seven hundred seventy thousand, eight hundred eighty".