143232013 has 4 divisors (see below), whose sum is σ = 150770560. Its totient is φ = 135693468.

The previous prime is 143232007. The next prime is 143232029. The reversal of 143232013 is 310232341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 143232013 - 2⁵ = 143231981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 7538527 = 143232013 / (1 + 4 + 3 + 2 + 3 + 2 + 0 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143232083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3769245 + ... + 3769282.

It is an arithmetic number, because the mean of its divisors is an integer number (37692640).

Almost surely, 2^143232013 is an apocalyptic number.

It is an amenable number.

143232013 is a deficient number, since it is larger than the sum of its proper divisors (7538547).

143232013 is an equidigital number, since it uses as much as digits as its factorization.

143232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7538546.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 143232013 is about 11967.9577622918. The cubic root of 143232013 is about 523.2148140154.

Adding to 143232013 its reverse (310232341), we get a palindrome (453464354).

The spelling of 143232013 in words is "one hundred forty-three million, two hundred thirty-two thousand, thirteen".