13022331 has 8 divisors (see below), whose sum is σ = 19843584. Its totient is φ = 7441320.

The previous prime is 13022311. The next prime is 13022333. The reversal of 13022331 is 13322031.

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

It is not a de Polignac number, because 13022331 - 2⁶ = 13022267 is a prime.

It is a super-2 number, since 2×13022331² = 339162209347122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13022331.

It is not an unprimeable number, because it can be changed into a prime (13022333) 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, 310035 + ... + 310076.

It is an arithmetic number, because the mean of its divisors is an integer number (2480448).

Almost surely, 2^13022331 is an apocalyptic number.

13022331 is a deficient number, since it is larger than the sum of its proper divisors (6821253).

13022331 is an equidigital number, since it uses as much as digits as its factorization.

13022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620121.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 13022331 is about 3608.6466992489. The cubic root of 13022331 is about 235.2680267675.

Adding to 13022331 its reverse (13322031), we get a palindrome (26344362).

The spelling of 13022331 in words is "thirteen million, twenty-two thousand, three hundred thirty-one".