12831457 has 2 divisors, whose sum is σ = 12831458. Its totient is φ = 12831456.

The previous prime is 12831449. The next prime is 12831461. The reversal of 12831457 is 75413821.

12831457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12787776 + 43681 = 3576^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 12831457 - 2³ = 12831449 is a prime.

It is not a weakly prime, because it can be changed into another prime (12831407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415728 + 6415729.

It is an arithmetic number, because the mean of its divisors is an integer number (6415729).

Almost surely, 2^12831457 is an apocalyptic number.

It is an amenable number.

12831457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831457 is an equidigital number, since it uses as much as digits as its factorization.

12831457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 12831457 is about 3582.1023156800. The cubic root of 12831457 is about 234.1128890126.

The spelling of 12831457 in words is "twelve million, eight hundred thirty-one thousand, four hundred fifty-seven".