143161812 has 72 divisors (see below), whose sum is σ = 372258432. Its totient is φ = 46368000.

The previous prime is 143161801. The next prime is 143161829. The reversal of 143161812 is 218161341.

It is a happy number.

143161812 is a `hidden beast` number, since 1 + 4 + 31 + 618 + 12 = 666.

It is a congruent number.

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, 356812 + ... + 357212.

It is an arithmetic number, because the mean of its divisors is an integer number (5170256).

Almost surely, 2^143161812 is an apocalyptic number.

143161812 is a gapful number since it is divisible by the number (12) 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 143161812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186129216).

143161812 is an abundant number, since it is smaller than the sum of its proper divisors (229096620).

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

143161812 is a wasteful number, since it uses less digits than its factorization.

143161812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 664 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 143161812 is about 11965.0245298537. The cubic root of 143161812 is about 523.1293205452.

The spelling of 143161812 in words is "one hundred forty-three million, one hundred sixty-one thousand, eight hundred twelve".