426871631 has 2 divisors, whose sum is σ = 426871632. Its totient is φ = 426871630.

The previous prime is 426871607. The next prime is 426871633. The reversal of 426871631 is 136178624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426871631 - 2⁶ = 426871567 is a prime.

It is a super-3 number, since 3×426871631³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 426871633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426871633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213435815 + 213435816.

It is an arithmetic number, because the mean of its divisors is an integer number (213435816).

Almost surely, 2^426871631 is an apocalyptic number.

426871631 is a deficient number, since it is larger than the sum of its proper divisors (1).

426871631 is an equidigital number, since it uses as much as digits as its factorization.

426871631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 426871631 is about 20660.8719806304. The cubic root of 426871631 is about 752.9493530706.

The spelling of 426871631 in words is "four hundred twenty-six million, eight hundred seventy-one thousand, six hundred thirty-one".