13203031021 has 8 divisors (see below), whose sum is σ = 13788048960. Its totient is φ = 12618927552.

The previous prime is 13203031013. The next prime is 13203031043. The reversal of 13203031021 is 12013030231.

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

It is not a de Polignac number, because 13203031021 - 2³ = 13203031013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13203030986 and 13203031004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203031081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199020 + ... + 256933.

It is an arithmetic number, because the mean of its divisors is an integer number (1723506120).

Almost surely, 2^13203031021 is an apocalyptic number.

It is an amenable number.

13203031021 is a deficient number, since it is larger than the sum of its proper divisors (585017939).

13203031021 is a wasteful number, since it uses less digits than its factorization.

13203031021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457235.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13203031021 its reverse (12013030231), we get a palindrome (25216061252).

The spelling of 13203031021 in words is "thirteen billion, two hundred three million, thirty-one thousand, twenty-one".