4640231 has 2 divisors, whose sum is σ = 4640232. Its totient is φ = 4640230.

The previous prime is 4640221. The next prime is 4640249. The reversal of 4640231 is 1320464.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4640231 is a prime.

It is a super-2 number, since 2×4640231² = 43063487466722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4640221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320115 + 2320116.

It is an arithmetic number, because the mean of its divisors is an integer number (2320116).

Almost surely, 2^4640231 is an apocalyptic number.

4640231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640231 is an equidigital number, since it uses as much as digits as its factorization.

4640231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4640231 is about 2154.1195417154. The cubic root of 4640231 is about 166.7937861303.

Adding to 4640231 its reverse (1320464), we get a palindrome (5960695).

The spelling of 4640231 in words is "four million, six hundred forty thousand, two hundred thirty-one".