13250431 has 4 divisors (see below), whose sum is σ = 13257832. Its totient is φ = 13243032.

The previous prime is 13250411. The next prime is 13250443. The reversal of 13250431 is 13405231.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13250431 - 2¹¹ = 13248383 is a prime.

It is a super-2 number, since 2×13250431² = 351147843371522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13250399 and 13250408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250411) 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, 856 + ... + 5218.

It is an arithmetic number, because the mean of its divisors is an integer number (3314458).

Almost surely, 2^13250431 is an apocalyptic number.

13250431 is a deficient number, since it is larger than the sum of its proper divisors (7401).

13250431 is an equidigital number, since it uses as much as digits as its factorization.

13250431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13250431 is about 3640.1141465619. The cubic root of 13250431 is about 236.6337402671.

Adding to 13250431 its reverse (13405231), we get a palindrome (26655662).

The spelling of 13250431 in words is "thirteen million, two hundred fifty thousand, four hundred thirty-one".