431694401 has 2 divisors, whose sum is σ = 431694402. Its totient is φ = 431694400.

The previous prime is 431694359. The next prime is 431694409. The reversal of 431694401 is 104496134.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268468225 + 163226176 = 16385^2 + 12776^2 .

It is a cyclic number.

It is not a de Polignac number, because 431694401 - 2¹⁰ = 431693377 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (431694409) 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, 215847200 + 215847201.

It is an arithmetic number, because the mean of its divisors is an integer number (215847201).

Almost surely, 2^431694401 is an apocalyptic number.

It is an amenable number.

431694401 is a deficient number, since it is larger than the sum of its proper divisors (1).

431694401 is an equidigital number, since it uses as much as digits as its factorization.

431694401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 431694401 is about 20777.2568208606. The cubic root of 431694401 is about 755.7743329742.

The spelling of 431694401 in words is "four hundred thirty-one million, six hundred ninety-four thousand, four hundred one".