308230231 has 2 divisors, whose sum is σ = 308230232. Its totient is φ = 308230230.

The previous prime is 308230187. The next prime is 308230243. The reversal of 308230231 is 132032803.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 308230231 - 2¹¹ = 308228183 is a prime.

It is a super-2 number, since 2×308230231² = 190011750604626722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (308230931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154115115 + 154115116.

It is an arithmetic number, because the mean of its divisors is an integer number (154115116).

Almost surely, 2^308230231 is an apocalyptic number.

308230231 is a deficient number, since it is larger than the sum of its proper divisors (1).

308230231 is an equidigital number, since it uses as much as digits as its factorization.

308230231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 308230231 is about 17556.4868638347. The cubic root of 308230231 is about 675.4995705493.

The spelling of 308230231 in words is "three hundred eight million, two hundred thirty thousand, two hundred thirty-one".