230611391 has 2 divisors, whose sum is σ = 230611392. Its totient is φ = 230611390.

The previous prime is 230611333. The next prime is 230611421. The reversal of 230611391 is 193116032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230611391 is a prime.

It is a super-2 number, since 2×230611391² = 106363227317909762, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230611391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230611331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115305695 + 115305696.

It is an arithmetic number, because the mean of its divisors is an integer number (115305696).

Almost surely, 2^230611391 is an apocalyptic number.

230611391 is a deficient number, since it is larger than the sum of its proper divisors (1).

230611391 is an equidigital number, since it uses as much as digits as its factorization.

230611391 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 26.

The square root of 230611391 is about 15185.8944748079. The cubic root of 230611391 is about 613.2349780913.

The spelling of 230611391 in words is "two hundred thirty million, six hundred eleven thousand, three hundred ninety-one".