426161531 has 2 divisors, whose sum is σ = 426161532. Its totient is φ = 426161530.

The previous prime is 426161497. The next prime is 426161539. The reversal of 426161531 is 135161624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426161531 - 2¹⁰ = 426160507 is a prime.

It is a super-2 number, since 2×426161531² = 363227301008527922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 426161494 and 426161503.

It is not a weakly prime, because it can be changed into another prime (426161539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213080765 + 213080766.

It is an arithmetic number, because the mean of its divisors is an integer number (213080766).

Almost surely, 2^426161531 is an apocalyptic number.

426161531 is a deficient number, since it is larger than the sum of its proper divisors (1).

426161531 is an equidigital number, since it uses as much as digits as its factorization.

426161531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 426161531 is about 20643.6801709385. The cubic root of 426161531 is about 752.5316114945.

The spelling of 426161531 in words is "four hundred twenty-six million, one hundred sixty-one thousand, five hundred thirty-one".