143021013 has 8 divisors (see below), whose sum is σ = 192087168. Its totient is φ = 94651104.

The previous prime is 143020993. The next prime is 143021023. The reversal of 143021013 is 310120341.

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

It is a de Polignac number, because none of the positive numbers 2^k-143021013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 143020983 and 143021001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143021023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173581 + ... + 174402.

It is an arithmetic number, because the mean of its divisors is an integer number (24010896).

Almost surely, 2^143021013 is an apocalyptic number.

It is an amenable number.

143021013 is a deficient number, since it is larger than the sum of its proper divisors (49066155).

143021013 is a wasteful number, since it uses less digits than its factorization.

143021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348123.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 143021013 is about 11959.1393084954. The cubic root of 143021013 is about 522.9577658450.

Adding to 143021013 its reverse (310120341), we get a palindrome (453141354).

The spelling of 143021013 in words is "one hundred forty-three million, twenty-one thousand, thirteen".