231211434304204 has 24 divisors (see below), whose sum is σ = 428466194069760. Its totient is φ = 108865390113936.

The previous prime is 231211434304093. The next prime is 231211434304231. The reversal of 231211434304204 is 402403434112132.

It is a super-2 number, since 2×231211434304204² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231211434304204.

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, 9108537352 + ... + 9108562735.

It is an arithmetic number, because the mean of its divisors is an integer number (17852758086240).

Almost surely, 2^{231211434304204} is an apocalyptic number.

It is an amenable number.

231211434304204 is a deficient number, since it is larger than the sum of its proper divisors (197254759765556).

231211434304204 is a wasteful number, since it uses less digits than its factorization.

231211434304204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18217100277 (or 18217100275 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 231211434304204 its reverse (402403434112132), we get a palindrome (633614868416336).

The spelling of 231211434304204 in words is "two hundred thirty-one trillion, two hundred eleven billion, four hundred thirty-four million, three hundred four thousand, two hundred four".