426731 has 2 divisors, whose sum is σ = 426732. Its totient is φ = 426730.

The previous prime is 426709. The next prime is 426737. The reversal of 426731 is 137624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426731 - 2¹⁸ = 164587 is a prime.

It is a super-2 number, since 2×426731² = 364198692722, 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 = 426697 and 426706.

It is not a weakly prime, because it can be changed into another prime (426737) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213365 + 213366.

It is an arithmetic number, because the mean of its divisors is an integer number (213366).

2⁴²⁶⁷³¹ is an apocalyptic number.

426731 is a deficient number, since it is larger than the sum of its proper divisors (1).

426731 is an equidigital number, since it uses as much as digits as its factorization.

426731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 23.

The square root of 426731 is about 653.2465078361. The cubic root of 426731 is about 75.2866658694.

The spelling of 426731 in words is "four hundred twenty-six thousand, seven hundred thirty-one".