652312231 has 2 divisors, whose sum is σ = 652312232. Its totient is φ = 652312230.

The previous prime is 652312163. The next prime is 652312267. The reversal of 652312231 is 132213256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 652312231 - 2²⁷ = 518094503 is a prime.

It is a super-2 number, since 2×652312231² = 851022493424394722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 652312196 and 652312205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652312931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326156115 + 326156116.

It is an arithmetic number, because the mean of its divisors is an integer number (326156116).

Almost surely, 2^652312231 is an apocalyptic number.

652312231 is a deficient number, since it is larger than the sum of its proper divisors (1).

652312231 is an equidigital number, since it uses as much as digits as its factorization.

652312231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 652312231 is about 25540.4038926560. The cubic root of 652312231 is about 867.2650410252.

Adding to 652312231 its reverse (132213256), we get a palindrome (784525487).

The spelling of 652312231 in words is "six hundred fifty-two million, three hundred twelve thousand, two hundred thirty-one".