13425231 has 8 divisors (see below), whose sum is σ = 18517680. Its totient is φ = 8641472.

The previous prime is 13425187. The next prime is 13425233. The reversal of 13425231 is 13252431.

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

It is a cyclic number.

It is not a de Polignac number, because 13425231 - 2⁷ = 13425103 is a prime.

It is a super-2 number, since 2×13425231² = 360473654806722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13425198 and 13425207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13425233) 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, 77070 + ... + 77243.

It is an arithmetic number, because the mean of its divisors is an integer number (2314710).

Almost surely, 2^13425231 is an apocalyptic number.

13425231 is a deficient number, since it is larger than the sum of its proper divisors (5092449).

13425231 is a wasteful number, since it uses less digits than its factorization.

13425231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154345.

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

The square root of 13425231 is about 3664.0457147803. The cubic root of 13425231 is about 237.6697571200.

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

The spelling of 13425231 in words is "thirteen million, four hundred twenty-five thousand, two hundred thirty-one".