231301233013 has 2 divisors, whose sum is σ = 231301233014. Its totient is φ = 231301233012.

The previous prime is 231301232989. The next prime is 231301233043. The reversal of 231301233013 is 310332103132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185375885809 + 45925347204 = 430553^2 + 214302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231301233013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231301233043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650616506 + 115650616507.

It is an arithmetic number, because the mean of its divisors is an integer number (115650616507).

Almost surely, 2^231301233013 is an apocalyptic number.

It is an amenable number.

231301233013 is a deficient number, since it is larger than the sum of its proper divisors (1).

231301233013 is an equidigital number, since it uses as much as digits as its factorization.

231301233013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 231301233013 its reverse (310332103132), we get a palindrome (541633336145).

The spelling of 231301233013 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirty-three thousand, thirteen".