12831407 has 2 divisors, whose sum is σ = 12831408. Its totient is φ = 12831406.

The previous prime is 12831391. The next prime is 12831419. The reversal of 12831407 is 70413821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12831407 - 2⁴ = 12831391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12831457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415703 + 6415704.

It is an arithmetic number, because the mean of its divisors is an integer number (6415704).

Almost surely, 2^12831407 is an apocalyptic number.

12831407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12831407 is an equidigital number, since it uses as much as digits as its factorization.

12831407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12831407 is about 3582.0953365314. The cubic root of 12831407 is about 234.1125849250.

The spelling of 12831407 in words is "twelve million, eight hundred thirty-one thousand, four hundred seven".