245407231 has 2 divisors, whose sum is σ = 245407232. Its totient is φ = 245407230.

The previous prime is 245407207. The next prime is 245407237. The reversal of 245407231 is 132704542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245407231 - 2⁷ = 245407103 is a prime.

It is a super-2 number, since 2×245407231² = 120449418054174722, 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 245407231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245407237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122703615 + 122703616.

It is an arithmetic number, because the mean of its divisors is an integer number (122703616).

Almost surely, 2^245407231 is an apocalyptic number.

245407231 is a deficient number, since it is larger than the sum of its proper divisors (1).

245407231 is an equidigital number, since it uses as much as digits as its factorization.

245407231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 245407231 is about 15665.4789585253. The cubic root of 245407231 is about 626.0789733545.

The spelling of 245407231 in words is "two hundred forty-five million, four hundred seven thousand, two hundred thirty-one".