231094840 has 64 divisors (see below), whose sum is σ = 538760160. Its totient is φ = 89157120.

The previous prime is 231094807. The next prime is 231094849. The reversal of 231094840 is 48490132.

231094840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231094849) 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, 128427 + ... + 130213.

Almost surely, 2^231094840 is an apocalyptic number.

231094840 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 231094840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269380080).

231094840 is an abundant number, since it is smaller than the sum of its proper divisors (307665320).

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

231094840 is a wasteful number, since it uses less digits than its factorization.

231094840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 231094840 is about 15201.8038403342. The cubic root of 231094840 is about 613.6632034085.

The spelling of 231094840 in words is "two hundred thirty-one million, ninety-four thousand, eight hundred forty".