13454431 has 4 divisors (see below), whose sum is σ = 13497192. Its totient is φ = 13411672.

The previous prime is 13454423. The next prime is 13454443. The reversal of 13454431 is 13445431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13445431 = 47 ⋅286073.

It is a cyclic number.

It is not a de Polignac number, because 13454431 - 2³ = 13454423 is a prime.

It is a super-2 number, since 2×13454431² = 362043427067522, 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 = 13454396 and 13454405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13454401) 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, 20905 + ... + 21538.

It is an arithmetic number, because the mean of its divisors is an integer number (3374298).

Almost surely, 2^13454431 is an apocalyptic number.

13454431 is a deficient number, since it is larger than the sum of its proper divisors (42761).

13454431 is an equidigital number, since it uses as much as digits as its factorization.

13454431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42760.

The product of its digits is 2880, while the sum is 25.

The square root of 13454431 is about 3668.0282169035. The cubic root of 13454431 is about 237.8419436418.

Adding to 13454431 its reverse (13445431), we get a palindrome (26899862).

It can be divided in two parts, 1345 and 4431, that added together give a square (5776 = 76²).

The spelling of 13454431 in words is "thirteen million, four hundred fifty-four thousand, four hundred thirty-one".