143936013321 has 81 divisors (see below), whose sum is σ = 227427051189. Its totient is φ = 87702596352.

The previous prime is 143936013271. The next prime is 143936013329. The reversal of 143936013321 is 123310639341.

It is a happy number.

The square root of 143936013321 is 379389.

It is a perfect power (a square), and thus also a powerful number.

143936013321 is a `hidden beast` number, since 1 + 43 + 9 + 3 + 601 + 3 + 3 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 70549203321 + 73386810000 = 265611^2 + 270900^2 .

It is not a de Polignac number, because 143936013321 - 2²⁷ = 143801795593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143936013329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 831999991 + ... + 832000163.

Almost surely, 2^143936013321 is an apocalyptic number.

143936013321 is the 379389-th square number.

143936013321 is the 189695-th centered octagonal number.

It is an amenable number.

143936013321 is a deficient number, since it is larger than the sum of its proper divisors (83491037868).

143936013321 is an equidigital number, since it uses as much as digits as its factorization.

143936013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

Multiplying 143936013321 by its sum of digits (36), we get a square (5181696479556 = 2276334²).

The spelling of 143936013321 in words is "one hundred forty-three billion, nine hundred thirty-six million, thirteen thousand, three hundred twenty-one".