143212513 has 4 divisors (see below), whose sum is σ = 149439168. Its totient is φ = 136985860.

The previous prime is 143212483. The next prime is 143212523. The reversal of 143212513 is 315212341.

It is a happy number.

143212513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 315212341 = 5897 ⋅53453.

It is a cyclic number.

It is not a de Polignac number, because 143212513 - 2⁹ = 143212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143212523) 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, 3113293 + ... + 3113338.

It is an arithmetic number, because the mean of its divisors is an integer number (37359792).

Almost surely, 2^143212513 is an apocalyptic number.

It is an amenable number.

143212513 is a deficient number, since it is larger than the sum of its proper divisors (6226655).

143212513 is an equidigital number, since it uses as much as digits as its factorization.

143212513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226654.

The product of its digits is 720, while the sum is 22.

The square root of 143212513 is about 11967.1430592268. The cubic root of 143212513 is about 523.1910689701.

Adding to 143212513 its reverse (315212341), we get a palindrome (458424854).

The spelling of 143212513 in words is "one hundred forty-three million, two hundred twelve thousand, five hundred thirteen".