431693 has 2 divisors, whose sum is σ = 431694. Its totient is φ = 431692.

The previous prime is 431671. The next prime is 431707. The reversal of 431693 is 396134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407044 + 24649 = 638^2 + 157^2 .

It is a cyclic number.

It is not a de Polignac number, because 431693 - 2¹² = 427597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215846 + 215847.

It is an arithmetic number, because the mean of its divisors is an integer number (215847).

2⁴³¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

431693 is a deficient number, since it is larger than the sum of its proper divisors (1).

431693 is an equidigital number, since it uses as much as digits as its factorization.

431693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 431693 is about 657.0334846870. The cubic root of 431693 is about 75.5773515389.

The spelling of 431693 in words is "four hundred thirty-one thousand, six hundred ninety-three".