163431346 has 16 divisors (see below), whose sum is σ = 265167000. Its totient is φ = 75097728.

The previous prime is 163431343. The next prime is 163431409. The reversal of 163431346 is 643134361.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 157126225 + 6305121 = 12535^2 + 2511^2 .

It is not an unprimeable number, because it can be changed into a prime (163431343) 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, 7771 + ... + 19678.

Almost surely, 2^163431346 is an apocalyptic number.

163431346 is a deficient number, since it is larger than the sum of its proper divisors (101735654).

163431346 is a wasteful number, since it uses less digits than its factorization.

163431346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27693.

The product of its digits is 15552, while the sum is 31.

The square root of 163431346 is about 12784.0269868301. The cubic root of 163431346 is about 546.7369837336.

It can be divided in two parts, 16343 and 1346, that added together give a square (17689 = 133²).

The spelling of 163431346 in words is "one hundred sixty-three million, four hundred thirty-one thousand, three hundred forty-six".