168403113 has 12 divisors (see below), whose sum is σ = 249182388. Its totient is φ = 109530240.

The previous prime is 168403091. The next prime is 168403121. The reversal of 168403113 is 311304861.

It can be written as a sum of positive squares in 2 ways, for example, as 3229209 + 165173904 = 1797^2 + 12852^2 .

It is not a de Polignac number, because 168403113 - 2¹⁸ = 168140969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168403163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227820 + ... + 228557.

It is an arithmetic number, because the mean of its divisors is an integer number (20765199).

Almost surely, 2^168403113 is an apocalyptic number.

It is an amenable number.

168403113 is a deficient number, since it is larger than the sum of its proper divisors (80779275).

168403113 is a wasteful number, since it uses less digits than its factorization.

168403113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456424 (or 456421 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 168403113 is about 12977.0225013290. The cubic root of 168403113 is about 552.2258153758.

Adding to 168403113 its reverse (311304861), we get a palindrome (479707974).

The spelling of 168403113 in words is "one hundred sixty-eight million, four hundred three thousand, one hundred thirteen".