405411031 has 2 divisors, whose sum is σ = 405411032. Its totient is φ = 405411030.

The previous prime is 405411029. The next prime is 405411043. The reversal of 405411031 is 130114504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405411031 - 2¹ = 405411029 is a prime.

It is a super-2 number, since 2×405411031² = 328716208112965922, which contains 22 as substring.

Together with 405411029, 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 (405411091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202705515 + 202705516.

It is an arithmetic number, because the mean of its divisors is an integer number (202705516).

Almost surely, 2^405411031 is an apocalyptic number.

405411031 is a deficient number, since it is larger than the sum of its proper divisors (1).

405411031 is an equidigital number, since it uses as much as digits as its factorization.

405411031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 405411031 is about 20134.8213550555. The cubic root of 405411031 is about 740.1138314053.

Adding to 405411031 its reverse (130114504), we get a palindrome (535525535).

The spelling of 405411031 in words is "four hundred five million, four hundred eleven thousand, thirty-one".