398245373231 has 2 divisors, whose sum is σ = 398245373232. Its totient is φ = 398245373230.

The previous prime is 398245373147. The next prime is 398245373263. The reversal of 398245373231 is 132373542893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 398245373231 - 2¹⁸ = 398245111087 is a prime.

It is a super-2 number, since 2×398245373231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 398245373231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (398245376231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 199122686615 + 199122686616.

It is an arithmetic number, because the mean of its divisors is an integer number (199122686616).

Almost surely, 2^398245373231 is an apocalyptic number.

398245373231 is a deficient number, since it is larger than the sum of its proper divisors (1).

398245373231 is an equidigital number, since it uses as much as digits as its factorization.

398245373231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 50.

The spelling of 398245373231 in words is "three hundred ninety-eight billion, two hundred forty-five million, three hundred seventy-three thousand, two hundred thirty-one".