231311213002273 has 2 divisors, whose sum is σ = 231311213002274. Its totient is φ = 231311213002272.

The previous prime is 231311213002231. The next prime is 231311213002343. The reversal of 231311213002273 is 372200312113132.

231311213002273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161815114511649 + 69496098490624 = 12720657^2 + 8336432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231311213002273 is a prime.

It is not a weakly prime, because it can be changed into another prime (231311213002073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115655606501136 + 115655606501137.

It is an arithmetic number, because the mean of its divisors is an integer number (115655606501137).

Almost surely, 2^{231311213002273} is an apocalyptic number.

It is an amenable number.

231311213002273 is a deficient number, since it is larger than the sum of its proper divisors (1).

231311213002273 is an equidigital number, since it uses as much as digits as its factorization.

231311213002273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The spelling of 231311213002273 in words is "two hundred thirty-one trillion, three hundred eleven billion, two hundred thirteen million, two thousand, two hundred seventy-three".