13203431 has 2 divisors, whose sum is σ = 13203432. Its totient is φ = 13203430.

The previous prime is 13203419. The next prime is 13203457. The reversal of 13203431 is 13430231.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (13430231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13203431 - 2¹⁴ = 13187047 is a prime.

It is a super-2 number, since 2×13203431² = 348661180343522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13203401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6601715 + 6601716.

It is an arithmetic number, because the mean of its divisors is an integer number (6601716).

Almost surely, 2^13203431 is an apocalyptic number.

13203431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13203431 is an equidigital number, since it uses as much as digits as its factorization.

13203431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13203431 is about 3633.6525700733. The cubic root of 13203431 is about 236.3536245580.

Adding to 13203431 its reverse (13430231), we get a palindrome (26633662).

The spelling of 13203431 in words is "thirteen million, two hundred three thousand, four hundred thirty-one".