13572431 has 4 divisors (see below), whose sum is σ = 13763664. Its totient is φ = 13381200.

The previous prime is 13572407. The next prime is 13572463. The reversal of 13572431 is 13427531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13427531 = 13 ⋅1032887.

It is a cyclic number.

It is not a de Polignac number, because 13572431 - 2¹⁰ = 13571407 is a prime.

It is a super-2 number, since 2×13572431² = 368421766499522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13572431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13572491) 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, 95510 + ... + 95651.

It is an arithmetic number, because the mean of its divisors is an integer number (3440916).

Almost surely, 2^13572431 is an apocalyptic number.

13572431 is a deficient number, since it is larger than the sum of its proper divisors (191233).

13572431 is an equidigital number, since it uses as much as digits as its factorization.

13572431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191232.

The product of its digits is 2520, while the sum is 26.

The square root of 13572431 is about 3684.0780393472. The cubic root of 13572431 is about 238.5352393845.

Adding to 13572431 its reverse (13427531), we get a palindrome (26999962).

The spelling of 13572431 in words is "thirteen million, five hundred seventy-two thousand, four hundred thirty-one".