231890363 has 2 divisors, whose sum is σ = 231890364. Its totient is φ = 231890362.

The previous prime is 231890333. The next prime is 231890369. The reversal of 231890363 is 363098132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231890363 - 2⁶ = 231890299 is a prime.

It is a Sophie Germain prime.

It is equal to p_12740858 and since 231890363 and 12740858 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (231890369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115945181 + 115945182.

It is an arithmetic number, because the mean of its divisors is an integer number (115945182).

Almost surely, 2^231890363 is an apocalyptic number.

231890363 is a deficient number, since it is larger than the sum of its proper divisors (1).

231890363 is an equidigital number, since it uses as much as digits as its factorization.

231890363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 231890363 is about 15227.9467755834. The cubic root of 231890363 is about 614.3665568975.

The spelling of 231890363 in words is "two hundred thirty-one million, eight hundred ninety thousand, three hundred sixty-three".