773728231 has 2 divisors, whose sum is σ = 773728232. Its totient is φ = 773728230.

The previous prime is 773728223. The next prime is 773728253. The reversal of 773728231 is 132827377.

It is a weak prime.

It is an emirp because it is prime and its reverse (132827377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 773728231 - 2³ = 773728223 is a prime.

It is a super-2 number, since 2×773728231² = 1197310750892778722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (773720231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386864115 + 386864116.

It is an arithmetic number, because the mean of its divisors is an integer number (386864116).

Almost surely, 2^773728231 is an apocalyptic number.

773728231 is a deficient number, since it is larger than the sum of its proper divisors (1).

773728231 is an equidigital number, since it uses as much as digits as its factorization.

773728231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 40.

The square root of 773728231 is about 27815.9707901774. The cubic root of 773728231 is about 918.0425580269.

The spelling of 773728231 in words is "seven hundred seventy-three million, seven hundred twenty-eight thousand, two hundred thirty-one".