626432431 has 2 divisors, whose sum is σ = 626432432. Its totient is φ = 626432430.

The previous prime is 626432369. The next prime is 626432447. The reversal of 626432431 is 134234626.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 626432431 - 2¹⁷ = 626301359 is a prime.

It is a super-2 number, since 2×626432431² = 784835181217139522, which contains 22 as substring.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 626432393 and 626432402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626432461) 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, 313216215 + 313216216.

It is an arithmetic number, because the mean of its divisors is an integer number (313216216).

Almost surely, 2^626432431 is an apocalyptic number.

626432431 is a deficient number, since it is larger than the sum of its proper divisors (1).

626432431 is an equidigital number, since it uses as much as digits as its factorization.

626432431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 31.

The square root of 626432431 is about 25028.6322239151. The cubic root of 626432431 is about 855.6406543158.

The spelling of 626432431 in words is "six hundred twenty-six million, four hundred thirty-two thousand, four hundred thirty-one".