231240351352013 has 2 divisors, whose sum is σ = 231240351352014. Its totient is φ = 231240351352012.

The previous prime is 231240351351937. The next prime is 231240351352039. The reversal of 231240351352013 is 310253153042132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212417274509764 + 18823076842249 = 14574542^2 + 4338557^2 .

It is a cyclic number.

It is not a de Polignac number, because 231240351352013 - 2²² = 231240347157709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231240351352093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115620175676006 + 115620175676007.

It is an arithmetic number, because the mean of its divisors is an integer number (115620175676007).

Almost surely, 2^{231240351352013} is an apocalyptic number.

It is an amenable number.

231240351352013 is a deficient number, since it is larger than the sum of its proper divisors (1).

231240351352013 is an equidigital number, since it uses as much as digits as its factorization.

231240351352013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 231240351352013 in words is "two hundred thirty-one trillion, two hundred forty billion, three hundred fifty-one million, three hundred fifty-two thousand, thirteen".