405053431 has 2 divisors, whose sum is σ = 405053432. Its totient is φ = 405053430.

The previous prime is 405053357. The next prime is 405053449. The reversal of 405053431 is 134350504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405053431 - 2¹⁷ = 404922359 is a prime.

It is a super-2 number, since 2×405053431² = 328136563929743522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 405053396 and 405053405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405054431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202526715 + 202526716.

It is an arithmetic number, because the mean of its divisors is an integer number (202526716).

Almost surely, 2^405053431 is an apocalyptic number.

405053431 is a deficient number, since it is larger than the sum of its proper divisors (1).

405053431 is an equidigital number, since it uses as much as digits as its factorization.

405053431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 405053431 is about 20125.9392575850. The cubic root of 405053431 is about 739.8961572085.

The spelling of 405053431 in words is "four hundred five million, fifty-three thousand, four hundred thirty-one".