231304120422 has 16 divisors (see below), whose sum is σ = 462622889280. Its totient is φ = 77098932072.

The previous prime is 231304120391. The next prime is 231304120457. The reversal of 231304120422 is 224021403132.

It is a happy number.

It is a super-2 number, since 2×231304120422² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231304120392 and 231304120401.

It is a congruent number.

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, 399472 + ... + 788787.

It is an arithmetic number, because the mean of its divisors is an integer number (28913930580).

Almost surely, 2^231304120422 is an apocalyptic number.

231304120422 is an abundant number, since it is smaller than the sum of its proper divisors (231318768858).

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

231304120422 is a wasteful number, since it uses less digits than its factorization.

231304120422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220707.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 231304120422 its reverse (224021403132), we get a palindrome (455325523554).

The spelling of 231304120422 in words is "two hundred thirty-one billion, three hundred four million, one hundred twenty thousand, four hundred twenty-two".