13431248 has 10 divisors (see below), whose sum is σ = 26023074. Its totient is φ = 6715616.

The previous prime is 13431239. The next prime is 13431251. The reversal of 13431248 is 84213431.

13431248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10291264 + 3139984 = 3208^2 + 1772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419711 + ... + 419742.

Almost surely, 2^13431248 is an apocalyptic number.

It is an amenable number.

13431248 is a deficient number, since it is larger than the sum of its proper divisors (12591826).

13431248 is an equidigital number, since it uses as much as digits as its factorization.

13431248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839461 (or 839455 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 13431248 is about 3664.8667097181. The cubic root of 13431248 is about 237.7052585660.

Adding to 13431248 its reverse (84213431), we get a palindrome (97644679).

The spelling of 13431248 in words is "thirteen million, four hundred thirty-one thousand, two hundred forty-eight".