13252431 has 8 divisors (see below), whose sum is σ = 17852464. Its totient is φ = 8743680.

The previous prime is 13252429. The next prime is 13252441. The reversal of 13252431 is 13425231.

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

It is not a de Polignac number, because 13252431 - 2¹ = 13252429 is a prime.

It is a super-2 number, since 2×13252431² = 351253854819522, 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 = 13252398 and 13252407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13252441) 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, 22480 + ... + 23061.

It is an arithmetic number, because the mean of its divisors is an integer number (2231558).

Almost surely, 2^13252431 is an apocalyptic number.

13252431 is a deficient number, since it is larger than the sum of its proper divisors (4600033).

13252431 is an equidigital number, since it uses as much as digits as its factorization.

13252431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45641.

The product of its digits is 720, while the sum is 21.

The square root of 13252431 is about 3640.3888528562. The cubic root of 13252431 is about 236.6456453810.

Adding to 13252431 its reverse (13425231), we get a palindrome (26677662).

The spelling of 13252431 in words is "thirteen million, two hundred fifty-two thousand, four hundred thirty-one".