143321021213 has 8 divisors (see below), whose sum is σ = 143707485432. Its totient is φ = 142934685696.

The previous prime is 143321021201. The next prime is 143321021251. The reversal of 143321021213 is 312120123341.

It can be written as a sum of positive squares in 4 ways, for example, as 115466078809 + 27854942404 = 339803^2 + 166898^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143321021213 - 2⁶ = 143321021149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143321021413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2455181 + ... + 2512877.

It is an arithmetic number, because the mean of its divisors is an integer number (17963435679).

Almost surely, 2^143321021213 is an apocalyptic number.

It is an amenable number.

143321021213 is a deficient number, since it is larger than the sum of its proper divisors (386464219).

143321021213 is an equidigital number, since it uses as much as digits as its factorization.

143321021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64351.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 143321021213 its reverse (312120123341), we get a palindrome (455441144554).

The spelling of 143321021213 in words is "one hundred forty-three billion, three hundred twenty-one million, twenty-one thousand, two hundred thirteen".