231422340 has 24 divisors (see below), whose sum is σ = 647982720. Its totient is φ = 61712608.

The previous prime is 231422333. The next prime is 231422341. The reversal of 231422340 is 43224132.

231422340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231422341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1928460 + ... + 1928579.

It is an arithmetic number, because the mean of its divisors is an integer number (26999280).

Almost surely, 2^231422340 is an apocalyptic number.

231422340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231422340 is an abundant number, since it is smaller than the sum of its proper divisors (416560380).

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

231422340 is a wasteful number, since it uses less digits than its factorization.

231422340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857051 (or 3857049 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 231422340 is about 15212.5717746869. The cubic root of 231422340 is about 613.9529543401.

Adding to 231422340 its reverse (43224132), we get a palindrome (274646472).

The spelling of 231422340 in words is "two hundred thirty-one million, four hundred twenty-two thousand, three hundred forty".