143222013 has 36 divisors (see below), whose sum is σ = 235863264. Its totient is φ = 86783400.

The previous prime is 143221951. The next prime is 143222021. The reversal of 143222013 is 310222341.

143222013 is a `hidden beast` number, since 1 + 432 + 220 + 13 = 666.

143222013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143222013 - 2²¹ = 141124861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143222063) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26968 + ... + 31838.

Almost surely, 2^143222013 is an apocalyptic number.

It is an amenable number.

143222013 is a deficient number, since it is larger than the sum of its proper divisors (92641251).

143222013 is an equidigital number, since it uses as much as digits as its factorization.

143222013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908 (or 4885 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 143222013 is about 11967.5399727764. The cubic root of 143222013 is about 523.2026373384.

Adding to 143222013 its reverse (310222341), we get a palindrome (453444354).

The spelling of 143222013 in words is "one hundred forty-three million, two hundred twenty-two thousand, thirteen".