1231168068 has 72 divisors (see below), whose sum is σ = 3397518488. Its totient is φ = 373621248.

The previous prime is 1231168031. The next prime is 1231168091. The reversal of 1231168068 is 8608611321.

It can be written as a sum of positive squares in 4 ways, for example, as 324 + 1231167744 = 18^2 + 35088^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16146 + ... + 52182.

Almost surely, 2^1231168068 is an apocalyptic number.

1231168068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231168068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698759244).

1231168068 is an abundant number, since it is smaller than the sum of its proper divisors (2166350420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231168068 is a wasteful number, since it uses less digits than its factorization.

1231168068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36133 (or 36128 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1231168068 is about 35088.0046169628. The cubic root of 1231168068 is about 1071.7803266834.

Adding to 1231168068 its reverse (8608611321), we get a palindrome (9839779389).

The spelling of 1231168068 in words is "one billion, two hundred thirty-one million, one hundred sixty-eight thousand, sixty-eight".