13303131 has 8 divisors (see below), whose sum is σ = 18508800. Its totient is φ = 8483112.

The previous prime is 13303117. The next prime is 13303133. The reversal of 13303131 is 13130331.

13303131 = T₂₅₀ + T₂₅₁ + ... + T₄₅₆.

13303131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13303131 - 2⁶ = 13303067 is a prime.

It is a super-2 number, since 2×13303131² = 353946588806322, 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 13303131.

It is not an unprimeable number, because it can be changed into a prime (13303133) 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, 96331 + ... + 96468.

It is an arithmetic number, because the mean of its divisors is an integer number (2313600).

Almost surely, 2^13303131 is an apocalyptic number.

13303131 is a deficient number, since it is larger than the sum of its proper divisors (5205669).

13303131 is a wasteful number, since it uses less digits than its factorization.

13303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192825.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 13303131 is about 3647.3457472524. The cubic root of 13303131 is about 236.9470408115.

Adding to 13303131 its reverse (13130331), we get a palindrome (26433462).

The spelling of 13303131 in words is "thirteen million, three hundred three thousand, one hundred thirty-one".