163431245 has 8 divisors (see below), whose sum is σ = 196257816. Its totient is φ = 130651456.

The previous prime is 163431241. The next prime is 163431259. The reversal of 163431245 is 542134361.

It can be written as a sum of positive squares in 4 ways, for example, as 62267881 + 101163364 = 7891^2 + 10058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163431245 - 2² = 163431241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163431241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3482 + ... + 18411.

It is an arithmetic number, because the mean of its divisors is an integer number (24532227).

Almost surely, 2^163431245 is an apocalyptic number.

It is an amenable number.

163431245 is a deficient number, since it is larger than the sum of its proper divisors (32826571).

163431245 is a wasteful number, since it uses less digits than its factorization.

163431245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23391.

The product of its digits is 8640, while the sum is 29.

The square root of 163431245 is about 12784.0230365875. The cubic root of 163431245 is about 546.7368711064.

The spelling of 163431245 in words is "one hundred sixty-three million, four hundred thirty-one thousand, two hundred forty-five".