401422631 has 2 divisors, whose sum is σ = 401422632. Its totient is φ = 401422630.

The previous prime is 401422603. The next prime is 401422699. The reversal of 401422631 is 136224104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401422631 - 2²⁶ = 334313767 is a prime.

It is a super-2 number, since 2×401422631² = 322280257357924322, 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 = 401422597 and 401422606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401422331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200711315 + 200711316.

It is an arithmetic number, because the mean of its divisors is an integer number (200711316).

Almost surely, 2^401422631 is an apocalyptic number.

401422631 is a deficient number, since it is larger than the sum of its proper divisors (1).

401422631 is an equidigital number, since it uses as much as digits as its factorization.

401422631 is an evil number, because the sum of its binary digits is even.

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

The square root of 401422631 is about 20035.5342080015. The cubic root of 401422631 is about 737.6787691116.

Adding to 401422631 its reverse (136224104), we get a palindrome (537646735).

The spelling of 401422631 in words is "four hundred one million, four hundred twenty-two thousand, six hundred thirty-one".