693431 has 2 divisors, whose sum is σ = 693432. Its totient is φ = 693430.

The previous prime is 693421. The next prime is 693437. The reversal of 693431 is 134396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 693431 - 2¹⁰ = 692407 is a prime.

It is a super-2 number, since 2×693431² = 961693103522, which contains 22 as substring.

It is a Sophie Germain prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 693431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (693437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346715 + 346716.

It is an arithmetic number, because the mean of its divisors is an integer number (346716).

2⁶⁹³⁴³¹ is an apocalyptic number.

693431 is a deficient number, since it is larger than the sum of its proper divisors (1).

693431 is an equidigital number, since it uses as much as digits as its factorization.

693431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 693431 is about 832.7250446576. The cubic root of 693431 is about 88.5117819759.

The spelling of 693431 in words is "six hundred ninety-three thousand, four hundred thirty-one".