813338458831 has 2 divisors, whose sum is σ = 813338458832. Its totient is φ = 813338458830.

The previous prime is 813338458819. The next prime is 813338458843. The reversal of 813338458831 is 138854833318.

It is a balanced prime because it is at equal distance from previous prime (813338458819) and next prime (813338458843).

It is a cyclic number.

It is not a de Polignac number, because 813338458831 - 2¹¹ = 813338456783 is a prime.

It is a super-2 number, since 2×813338458831² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813338458531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406669229415 + 406669229416.

It is an arithmetic number, because the mean of its divisors is an integer number (406669229416).

Almost surely, 2^813338458831 is an apocalyptic number.

813338458831 is a deficient number, since it is larger than the sum of its proper divisors (1).

813338458831 is an equidigital number, since it uses as much as digits as its factorization.

813338458831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 55.

The spelling of 813338458831 in words is "eight hundred thirteen billion, three hundred thirty-eight million, four hundred fifty-eight thousand, eight hundred thirty-one".