408122131 has 2 divisors, whose sum is σ = 408122132. Its totient is φ = 408122130.

The previous prime is 408122093. The next prime is 408122149. The reversal of 408122131 is 131221804.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408122131 - 2⁹ = 408121619 is a prime.

It is a super-2 number, since 2×408122131² = 333127347623962322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408129131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204061065 + 204061066.

It is an arithmetic number, because the mean of its divisors is an integer number (204061066).

Almost surely, 2^408122131 is an apocalyptic number.

408122131 is a deficient number, since it is larger than the sum of its proper divisors (1).

408122131 is an equidigital number, since it uses as much as digits as its factorization.

408122131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 408122131 is about 20202.0328432561. The cubic root of 408122131 is about 741.7599520643.

Adding to 408122131 its reverse (131221804), we get a palindrome (539343935).

The spelling of 408122131 in words is "four hundred eight million, one hundred twenty-two thousand, one hundred thirty-one".