1230431173 has 2 divisors, whose sum is σ = 1230431174. Its totient is φ = 1230431172.

The previous prime is 1230431149. The next prime is 1230431233. The reversal of 1230431173 is 3711340321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230115329 + 315844 = 35073^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230431173 - 2²⁹ = 693560261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230431473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615215586 + 615215587.

It is an arithmetic number, because the mean of its divisors is an integer number (615215587).

Almost surely, 2^1230431173 is an apocalyptic number.

It is an amenable number.

1230431173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230431173 is an equidigital number, since it uses as much as digits as its factorization.

1230431173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1230431173 is about 35077.5023768797. The cubic root of 1230431173 is about 1071.5664519606.

Adding to 1230431173 its reverse (3711340321), we get a palindrome (4941771494).

The spelling of 1230431173 in words is "one billion, two hundred thirty million, four hundred thirty-one thousand, one hundred seventy-three".