231202320999 has 32 divisors (see below), whose sum is σ = 337011998400. Its totient is φ = 140972607360.

The previous prime is 231202320977. The next prime is 231202321001. The reversal of 231202320999 is 999023202132.

It is not a de Polignac number, because 231202320999 - 2⁹ = 231202320487 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 231202320999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231202320599) 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 31 ways as a sum of consecutive naturals, for example, 557509 + ... + 879329.

It is an arithmetic number, because the mean of its divisors is an integer number (10531624950).

Almost surely, 2^231202320999 is an apocalyptic number.

231202320999 is a deficient number, since it is larger than the sum of its proper divisors (105809677401).

231202320999 is a wasteful number, since it uses less digits than its factorization.

231202320999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321972 (or 321946 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The spelling of 231202320999 in words is "two hundred thirty-one billion, two hundred two million, three hundred twenty thousand, nine hundred ninety-nine".