13312143021 has 32 divisors (see below), whose sum is σ = 18733658112. Its totient is φ = 8391841920.

The previous prime is 13312143001. The next prime is 13312143023. The reversal of 13312143021 is 12034121331.

It is not a de Polignac number, because 13312143021 - 2⁵ = 13312142989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312143023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5279241 + ... + 5281761.

It is an arithmetic number, because the mean of its divisors is an integer number (585426816).

Almost surely, 2^13312143021 is an apocalyptic number.

It is an amenable number.

13312143021 is a deficient number, since it is larger than the sum of its proper divisors (5421515091).

13312143021 is a wasteful number, since it uses less digits than its factorization.

13312143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13312143021 its reverse (12034121331), we get a palindrome (25346264352).

The spelling of 13312143021 in words is "thirteen billion, three hundred twelve million, one hundred forty-three thousand, twenty-one".