2320891231 has 2 divisors, whose sum is σ = 2320891232. Its totient is φ = 2320891230.

The previous prime is 2320891213. The next prime is 2320891241. The reversal of 2320891231 is 1321980232.

Together with previous prime (2320891213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2320891231 - 2¹⁹ = 2320366943 is a prime.

It is a super-2 number, since 2×2320891231² = 10773072212265390722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2320891193 and 2320891202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2320891241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160445615 + 1160445616.

It is an arithmetic number, because the mean of its divisors is an integer number (1160445616).

Almost surely, 2^2320891231 is an apocalyptic number.

2320891231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320891231 is an equidigital number, since it uses as much as digits as its factorization.

2320891231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2320891231 is about 48175.6290150943. The cubic root of 2320891231 is about 1323.9906837772.

The spelling of 2320891231 in words is "two billion, three hundred twenty million, eight hundred ninety-one thousand, two hundred thirty-one".