13214021331 has 16 divisors (see below), whose sum is σ = 20164813568. Its totient is φ = 7539933600.

The previous prime is 13214021329. The next prime is 13214021351. The reversal of 13214021331 is 13312041231.

It is not a de Polignac number, because 13214021331 - 2¹ = 13214021329 is a prime.

It is a super-2 number, since 2×13214021331² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13214021298 and 13214021307.

It is not an unprimeable number, because it can be changed into a prime (13214021351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440800 + ... + 469821.

It is an arithmetic number, because the mean of its divisors is an integer number (1260300848).

Almost surely, 2^13214021331 is an apocalyptic number.

13214021331 is a deficient number, since it is larger than the sum of its proper divisors (6950792237).

13214021331 is an equidigital number, since it uses as much as digits as its factorization.

13214021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911322.

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

Adding to 13214021331 its reverse (13312041231), we get a palindrome (26526062562).

The spelling of 13214021331 in words is "thirteen billion, two hundred fourteen million, twenty-one thousand, three hundred thirty-one".