13133031 has 4 divisors (see below), whose sum is σ = 17510712. Its totient is φ = 8755352.

The previous prime is 13133011. The next prime is 13133033. The reversal of 13133031 is 13033131.

13133031 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13033131 = 3 ⋅4344377.

It is a cyclic number.

It is not a de Polignac number, because 13133031 - 2⁶ = 13132967 is a prime.

It is a super-2 number, since 2×13133031² = 344953006493922, 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 13133031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188836 + ... + 2188841.

It is an arithmetic number, because the mean of its divisors is an integer number (4377678).

Almost surely, 2^13133031 is an apocalyptic number.

13133031 is a deficient number, since it is larger than the sum of its proper divisors (4377681).

13133031 is an equidigital number, since it uses as much as digits as its factorization.

13133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377680.

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

The square root of 13133031 is about 3623.9524003497. The cubic root of 13133031 is about 235.9328006988.

Adding to 13133031 its reverse (13033131), we get a palindrome (26166162).

The spelling of 13133031 in words is "thirteen million, one hundred thirty-three thousand, thirty-one".