230781751 has 2 divisors, whose sum is σ = 230781752. Its totient is φ = 230781750.

The previous prime is 230781659. The next prime is 230781767. The reversal of 230781751 is 157187032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230781751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230781781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115390875 + 115390876.

It is an arithmetic number, because the mean of its divisors is an integer number (115390876).

Almost surely, 2^230781751 is an apocalyptic number.

230781751 is a deficient number, since it is larger than the sum of its proper divisors (1).

230781751 is an equidigital number, since it uses as much as digits as its factorization.

230781751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 230781751 is about 15191.5025919097. The cubic root of 230781751 is about 613.3859463438.

The spelling of 230781751 in words is "two hundred thirty million, seven hundred eighty-one thousand, seven hundred fifty-one".