231833380 has 24 divisors (see below), whose sum is σ = 491674680. Its totient is φ = 91814400.

The previous prime is 231833363. The next prime is 231833411. The reversal of 231833380 is 83338132.

It can be written as a sum of positive squares in 4 ways, for example, as 43375396 + 188457984 = 6586^2 + 13728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55365 + ... + 59404.

It is an arithmetic number, because the mean of its divisors is an integer number (20486445).

Almost surely, 2^231833380 is an apocalyptic number.

231833380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231833380 is an abundant number, since it is smaller than the sum of its proper divisors (259841300).

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

231833380 is a wasteful number, since it uses less digits than its factorization.

231833380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114879 (or 114877 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 231833380 is about 15226.0756598672. The cubic root of 231833380 is about 614.3162294970.

The spelling of 231833380 in words is "two hundred thirty-one million, eight hundred thirty-three thousand, three hundred eighty".