813256267 has 2 divisors, whose sum is σ = 813256268. Its totient is φ = 813256266.

The previous prime is 813256261. The next prime is 813256271. The reversal of 813256267 is 762652318.

813256267 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-813256267 is a prime.

It is a super-2 number, since 2×813256267² = 1322771511629550578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (813256261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406628133 + 406628134.

It is an arithmetic number, because the mean of its divisors is an integer number (406628134).

Almost surely, 2^813256267 is an apocalyptic number.

813256267 is a deficient number, since it is larger than the sum of its proper divisors (1).

813256267 is an equidigital number, since it uses as much as digits as its factorization.

813256267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 813256267 is about 28517.6483427368. The cubic root of 813256267 is about 933.4172148109.

The spelling of 813256267 in words is "eight hundred thirteen million, two hundred fifty-six thousand, two hundred sixty-seven".