813035123 has 2 divisors, whose sum is σ = 813035124. Its totient is φ = 813035122.

The previous prime is 813035107. The next prime is 813035141. The reversal of 813035123 is 321530318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813035123 - 2⁴ = 813035107 is a prime.

It is a super-2 number, since 2×813035123² = 1322052222463250258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813035092 and 813035101.

It is not a weakly prime, because it can be changed into another prime (813035143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406517561 + 406517562.

It is an arithmetic number, because the mean of its divisors is an integer number (406517562).

Almost surely, 2^813035123 is an apocalyptic number.

813035123 is a deficient number, since it is larger than the sum of its proper divisors (1).

813035123 is an equidigital number, since it uses as much as digits as its factorization.

813035123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 813035123 is about 28513.7707608096. The cubic root of 813035123 is about 933.3326009206.

The spelling of 813035123 in words is "eight hundred thirteen million, thirty-five thousand, one hundred twenty-three".