13431133 has 2 divisors, whose sum is σ = 13431134. Its totient is φ = 13431132.

The previous prime is 13431127. The next prime is 13431137. The reversal of 13431133 is 33113431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12694969 + 736164 = 3563^2 + 858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13431133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13431133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13431137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715566 + 6715567.

It is an arithmetic number, because the mean of its divisors is an integer number (6715567).

Almost surely, 2^13431133 is an apocalyptic number.

It is an amenable number.

13431133 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431133 is an equidigital number, since it uses as much as digits as its factorization.

13431133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 19.

The square root of 13431133 is about 3664.8510201644. The cubic root of 13431133 is about 237.7045801435.

Adding to 13431133 its reverse (33113431), we get a palindrome (46544564).

The spelling of 13431133 in words is "thirteen million, four hundred thirty-one thousand, one hundred thirty-three".