402424100431 has 2 divisors, whose sum is σ = 402424100432. Its totient is φ = 402424100430.

The previous prime is 402424100389. The next prime is 402424100527. The reversal of 402424100431 is 134001424204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402424100431 - 2²⁹ = 401887229519 is a prime.

It is a super-2 number, since 2×402424100431² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402424100396 and 402424100405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402424100531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201212050215 + 201212050216.

It is an arithmetic number, because the mean of its divisors is an integer number (201212050216).

Almost surely, 2^402424100431 is an apocalyptic number.

402424100431 is a deficient number, since it is larger than the sum of its proper divisors (1).

402424100431 is an equidigital number, since it uses as much as digits as its factorization.

402424100431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 402424100431 its reverse (134001424204), we get a palindrome (536425524635).

The spelling of 402424100431 in words is "four hundred two billion, four hundred twenty-four million, one hundred thousand, four hundred thirty-one".