231320021311032 has 16 divisors (see below), whose sum is σ = 578300053277640. Its totient is φ = 77106673770336.

The previous prime is 231320021311019. The next prime is 231320021311033. The reversal of 231320021311032 is 230113120023132.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 9638334221293 = 231320021311032 / (2 + 3 + 1 + 3 + 2 + 0 + 0 + 2 + 1 + 3 + 1 + 1 + 0 + 3 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 231320021310993 and 231320021311011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231320021311033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819167110623 + ... + 4819167110670.

Almost surely, 2^{231320021311032} is an apocalyptic number.

It is an amenable number.

231320021311032 is an abundant number, since it is smaller than the sum of its proper divisors (346980031966608).

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

231320021311032 is a wasteful number, since it uses less digits than its factorization.

231320021311032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638334221302 (or 9638334221298 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 231320021311032 its reverse (230113120023132), we get a palindrome (461433141334164).

The spelling of 231320021311032 in words is "two hundred thirty-one trillion, three hundred twenty billion, twenty-one million, three hundred eleven thousand, thirty-two".