13021423331 has 8 divisors (see below), whose sum is σ = 15244593504. Its totient is φ = 10888994880.

The previous prime is 13021423307. The next prime is 13021423333. The reversal of 13021423331 is 13332412031.

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 13021423331 - 2¹⁴ = 13021406947 is a prime.

It is a super-2 number, since 2×13021423331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13021423297 and 13021423306.

It is not an unprimeable number, because it can be changed into a prime (13021423333) 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, 22685120 + ... + 22685693.

It is an arithmetic number, because the mean of its divisors is an integer number (1905574188).

Almost surely, 2^13021423331 is an apocalyptic number.

13021423331 is a deficient number, since it is larger than the sum of its proper divisors (2223170173).

13021423331 is an equidigital number, since it uses as much as digits as its factorization.

13021423331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45370861.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13021423331 its reverse (13332412031), we get a palindrome (26353835362).

The spelling of 13021423331 in words is "thirteen billion, twenty-one million, four hundred twenty-three thousand, three hundred thirty-one".