745394231 has 2 divisors, whose sum is σ = 745394232. Its totient is φ = 745394230.

The previous prime is 745394203. The next prime is 745394233. The reversal of 745394231 is 132493547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745394231 - 2²⁶ = 678285367 is a prime.

It is a super-2 number, since 2×745394231² = 1111225119216162722, which contains 22 as substring.

Together with 745394233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745394233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372697115 + 372697116.

It is an arithmetic number, because the mean of its divisors is an integer number (372697116).

Almost surely, 2^745394231 is an apocalyptic number.

745394231 is a deficient number, since it is larger than the sum of its proper divisors (1).

745394231 is an equidigital number, since it uses as much as digits as its factorization.

745394231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 745394231 is about 27301.9089259341. The cubic root of 745394231 is about 906.6966456861.

The spelling of 745394231 in words is "seven hundred forty-five million, three hundred ninety-four thousand, two hundred thirty-one".