231233020313 has 4 divisors (see below), whose sum is σ = 234489823488. Its totient is φ = 227976217140.

The previous prime is 231233020289. The next prime is 231233020327. The reversal of 231233020313 is 313020332132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231233020313 - 2²⁸ = 230964584857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231233020813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628401481 + ... + 1628401622.

It is an arithmetic number, because the mean of its divisors is an integer number (58622455872).

Almost surely, 2^231233020313 is an apocalyptic number.

It is an amenable number.

231233020313 is a deficient number, since it is larger than the sum of its proper divisors (3256803175).

231233020313 is an equidigital number, since it uses as much as digits as its factorization.

231233020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256803174.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 231233020313 its reverse (313020332132), we get a palindrome (544253352445).

The spelling of 231233020313 in words is "two hundred thirty-one billion, two hundred thirty-three million, twenty thousand, three hundred thirteen".