813227507 has 2 divisors, whose sum is σ = 813227508. Its totient is φ = 813227506.

The previous prime is 813227489. The next prime is 813227543. The reversal of 813227507 is 705722318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813227507 - 2²⁰ = 812178931 is a prime.

It is a super-2 number, since 2×813227507² = 1322677956282870098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (813227407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406613753 + 406613754.

It is an arithmetic number, because the mean of its divisors is an integer number (406613754).

Almost surely, 2^813227507 is an apocalyptic number.

813227507 is a deficient number, since it is larger than the sum of its proper divisors (1).

813227507 is an equidigital number, since it uses as much as digits as its factorization.

813227507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 813227507 is about 28517.1440891265. The cubic root of 813227507 is about 933.4062115570.

The spelling of 813227507 in words is "eight hundred thirteen million, two hundred twenty-seven thousand, five hundred seven".