424540231 has 2 divisors, whose sum is σ = 424540232. Its totient is φ = 424540230.

The previous prime is 424540163. The next prime is 424540243. The reversal of 424540231 is 132045424.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 424540231 - 2¹⁵ = 424507463 is a prime.

It is a super-2 number, since 2×424540231² = 360468815475066722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 424540196 and 424540205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424540271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212270115 + 212270116.

It is an arithmetic number, because the mean of its divisors is an integer number (212270116).

Almost surely, 2^424540231 is an apocalyptic number.

424540231 is a deficient number, since it is larger than the sum of its proper divisors (1).

424540231 is an equidigital number, since it uses as much as digits as its factorization.

424540231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 424540231 is about 20604.3740744532. The cubic root of 424540231 is about 751.5760817831.

Adding to 424540231 its reverse (132045424), we get a palindrome (556585655).

The spelling of 424540231 in words is "four hundred twenty-four million, five hundred forty thousand, two hundred thirty-one".