231230330381 has 2 divisors, whose sum is σ = 231230330382. Its totient is φ = 231230330380.

The previous prime is 231230330377. The next prime is 231230330389. The reversal of 231230330381 is 183033032132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207029550025 + 24200780356 = 455005^2 + 155566^2 .

It is a cyclic number.

It is not a de Polignac number, because 231230330381 - 2² = 231230330377 is a prime.

It is a super-2 number, since 2×231230330381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231230330389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115615165190 + 115615165191.

It is an arithmetic number, because the mean of its divisors is an integer number (115615165191).

Almost surely, 2^231230330381 is an apocalyptic number.

It is an amenable number.

231230330381 is a deficient number, since it is larger than the sum of its proper divisors (1).

231230330381 is an equidigital number, since it uses as much as digits as its factorization.

231230330381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 231230330381 in words is "two hundred thirty-one billion, two hundred thirty million, three hundred thirty thousand, three hundred eighty-one".