231421403204 has 12 divisors (see below), whose sum is σ = 407085837564. Its totient is φ = 115111163904.

The previous prime is 231421403183. The next prime is 231421403209. The reversal of 231421403204 is 402304124132.

It can be written as a sum of positive squares in 2 ways, for example, as 94957655104 + 136463748100 = 308152^2 + 369410^2 .

It is not an unprimeable number, because it can be changed into a prime (231421403209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149883557 + ... + 149885100.

It is an arithmetic number, because the mean of its divisors is an integer number (33923819797).

Almost surely, 2^231421403204 is an apocalyptic number.

It is an amenable number.

231421403204 is a deficient number, since it is larger than the sum of its proper divisors (175664434360).

231421403204 is a wasteful number, since it uses less digits than its factorization.

231421403204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299768854 (or 299768852 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231421403204 its reverse (402304124132), we get a palindrome (633725527336).

The spelling of 231421403204 in words is "two hundred thirty-one billion, four hundred twenty-one million, four hundred three thousand, two hundred four".