231321013002 has 32 divisors (see below), whose sum is σ = 541101787200. Its totient is φ = 73048740624.

The previous prime is 231321012947. The next prime is 231321013013. The reversal of 231321013002 is 200310123132.

231321013002 is a `hidden beast` number, since 231 + 32 + 101 + 300 + 2 = 666.

It is a super-2 number, since 2×231321013002² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112728513 + ... + 112730564.

It is an arithmetic number, because the mean of its divisors is an integer number (16909430850).

Almost surely, 2^231321013002 is an apocalyptic number.

231321013002 is an abundant number, since it is smaller than the sum of its proper divisors (309780774198).

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

231321013002 is a wasteful number, since it uses less digits than its factorization.

231321013002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225459107 (or 225459101 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231321013002 its reverse (200310123132), we get a palindrome (431631136134).

The spelling of 231321013002 in words is "two hundred thirty-one billion, three hundred twenty-one million, thirteen thousand, two".