229431493 has 2 divisors, whose sum is σ = 229431494. Its totient is φ = 229431492.

The previous prime is 229431467. The next prime is 229431529. The reversal of 229431493 is 394134922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206410689 + 23020804 = 14367^2 + 4798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229431493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229431443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114715746 + 114715747.

It is an arithmetic number, because the mean of its divisors is an integer number (114715747).

Almost surely, 2^229431493 is an apocalyptic number.

It is an amenable number.

229431493 is a deficient number, since it is larger than the sum of its proper divisors (1).

229431493 is an equidigital number, since it uses as much as digits as its factorization.

229431493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 229431493 is about 15146.9961708584. The cubic root of 229431493 is about 612.1873394110.

The spelling of 229431493 in words is "two hundred twenty-nine million, four hundred thirty-one thousand, four hundred ninety-three".