401426231 has 2 divisors, whose sum is σ = 401426232. Its totient is φ = 401426230.

The previous prime is 401426191. The next prime is 401426251. The reversal of 401426231 is 132624104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401426231 - 2²² = 397231927 is a prime.

It is a super-2 number, since 2×401426231² = 322286037869730722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401426197 and 401426206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401426251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200713115 + 200713116.

It is an arithmetic number, because the mean of its divisors is an integer number (200713116).

Almost surely, 2^401426231 is an apocalyptic number.

401426231 is a deficient number, since it is larger than the sum of its proper divisors (1).

401426231 is an equidigital number, since it uses as much as digits as its factorization.

401426231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 401426231 is about 20035.6240481798. The cubic root of 401426231 is about 737.6809742984.

The spelling of 401426231 in words is "four hundred one million, four hundred twenty-six thousand, two hundred thirty-one".