697853231 has 2 divisors, whose sum is σ = 697853232. Its totient is φ = 697853230.

The previous prime is 697853153. The next prime is 697853243. The reversal of 697853231 is 132358796.

697853231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-697853231 is a prime.

It is a super-2 number, since 2×697853231² = 973998264034278722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (697853291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348926615 + 348926616.

It is an arithmetic number, because the mean of its divisors is an integer number (348926616).

Almost surely, 2^697853231 is an apocalyptic number.

697853231 is a deficient number, since it is larger than the sum of its proper divisors (1).

697853231 is an equidigital number, since it uses as much as digits as its factorization.

697853231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 697853231 is about 26416.9118369275. The cubic root of 697853231 is about 886.9953937956.

The spelling of 697853231 in words is "six hundred ninety-seven million, eight hundred fifty-three thousand, two hundred thirty-one".