168731012 has 18 divisors (see below), whose sum is σ = 300975738. Its totient is φ = 82768192.

The previous prime is 168730997. The next prime is 168731029. The reversal of 168731012 is 210137861.

It can be written as a sum of positive squares in 3 ways, for example, as 44542276 + 124188736 = 6674^2 + 11144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3728 + ... + 18744.

Almost surely, 2^168731012 is an apocalyptic number.

It is an amenable number.

168731012 is a deficient number, since it is larger than the sum of its proper divisors (132244726).

168731012 is a wasteful number, since it uses less digits than its factorization.

168731012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15127 (or 15072 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 168731012 is about 12989.6501877456. The cubic root of 168731012 is about 552.5839973845.

Adding to 168731012 its reverse (210137861), we get a palindrome (378868873).

The spelling of 168731012 in words is "one hundred sixty-eight million, seven hundred thirty-one thousand, twelve".