1232320313231 has 16 divisors (see below), whose sum is σ = 1420791988224. Its totient is φ = 1046970779904.

The previous prime is 1232320313101. The next prime is 1232320313261. The reversal of 1232320313231 is 1323130232321.

It is not a de Polignac number, because 1232320313231 - 2¹⁸ = 1232320051087 is a prime.

It is a super-2 number, since 2×1232320313231² (a number of 25 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 1232320313231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232320313261) 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 15 ways as a sum of consecutive naturals, for example, 292991 + ... + 1597023.

It is an arithmetic number, because the mean of its divisors is an integer number (88799499264).

Almost surely, 2^{1232320313231} is an apocalyptic number.

1232320313231 is a deficient number, since it is larger than the sum of its proper divisors (188471674993).

1232320313231 is a wasteful number, since it uses less digits than its factorization.

1232320313231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305230.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1232320313231 its reverse (1323130232321), we get a palindrome (2555450545552).

The spelling of 1232320313231 in words is "one trillion, two hundred thirty-two billion, three hundred twenty million, three hundred thirteen thousand, two hundred thirty-one".