231435493 has 2 divisors, whose sum is σ = 231435494. Its totient is φ = 231435492.

The previous prime is 231435461. The next prime is 231435509. The reversal of 231435493 is 394534132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 17164449 = 14638^2 + 4143^2 .

It is a cyclic number.

It is not a de Polignac number, because 231435493 - 2⁵ = 231435461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231435443) 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, 115717746 + 115717747.

It is an arithmetic number, because the mean of its divisors is an integer number (115717747).

Almost surely, 2^231435493 is an apocalyptic number.

It is an amenable number.

231435493 is a deficient number, since it is larger than the sum of its proper divisors (1).

231435493 is an equidigital number, since it uses as much as digits as its factorization.

231435493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 34.

The square root of 231435493 is about 15213.0040754612. The cubic root of 231435493 is about 613.9645855569.

The spelling of 231435493 in words is "two hundred thirty-one million, four hundred thirty-five thousand, four hundred ninety-three".