426005231 has 2 divisors, whose sum is σ = 426005232. Its totient is φ = 426005230.

The previous prime is 426005221. The next prime is 426005243. The reversal of 426005231 is 132500624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426005231 - 2¹⁴ = 425988847 is a prime.

It is a super-2 number, since 2×426005231² = 362960913678726722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 426005197 and 426005206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426005201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213002615 + 213002616.

It is an arithmetic number, because the mean of its divisors is an integer number (213002616).

Almost surely, 2^426005231 is an apocalyptic number.

426005231 is a deficient number, since it is larger than the sum of its proper divisors (1).

426005231 is an equidigital number, since it uses as much as digits as its factorization.

426005231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 426005231 is about 20639.8941615503. The cubic root of 426005231 is about 752.4396001601.

Adding to 426005231 its reverse (132500624), we get a palindrome (558505855).

The spelling of 426005231 in words is "four hundred twenty-six million, five thousand, two hundred thirty-one".