231321013004 has 24 divisors (see below), whose sum is σ = 447260069088. Its totient is φ = 104124035840.

The previous prime is 231321012947. The next prime is 231321013013. The reversal of 231321013004 is 400310123132.

It is a super-2 number, since 2×231321013004² (a number of 24 digits) contains 22 as substring.

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, 73950167 + ... + 73953294.

It is an arithmetic number, because the mean of its divisors is an integer number (18635836212).

Almost surely, 2^231321013004 is an apocalyptic number.

It is an amenable number.

231321013004 is a deficient number, since it is larger than the sum of its proper divisors (215939056084).

231321013004 is a wasteful number, since it uses less digits than its factorization.

231321013004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147903505 (or 147903503 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231321013004 its reverse (400310123132), we get a palindrome (631631136136).

The spelling of 231321013004 in words is "two hundred thirty-one billion, three hundred twenty-one million, thirteen thousand, four".