13925231 has 4 divisors (see below), whose sum is σ = 14374464. Its totient is φ = 13476000.

The previous prime is 13925129. The next prime is 13925243. The reversal of 13925231 is 13252931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13925231 is a prime.

It is a super-2 number, since 2×13925231² = 387824116806722, 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 13925231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13925531) 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, 224570 + ... + 224631.

It is an arithmetic number, because the mean of its divisors is an integer number (3593616).

Almost surely, 2^13925231 is an apocalyptic number.

13925231 is a deficient number, since it is larger than the sum of its proper divisors (449233).

13925231 is an equidigital number, since it uses as much as digits as its factorization.

13925231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449232.

The product of its digits is 1620, while the sum is 26.

The square root of 13925231 is about 3731.6525829718. The cubic root of 13925231 is about 240.5844033609.

The spelling of 13925231 in words is "thirteen million, nine hundred twenty-five thousand, two hundred thirty-one".