12831958 has 4 divisors (see below), whose sum is σ = 19247940. Its totient is φ = 6415978.

The previous prime is 12831937. The next prime is 12831961. The reversal of 12831958 is 85913821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85913821 = 7 ⋅12273403.

It is a super-2 number, since 2×12831958² = 329318292227528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207988 + ... + 3207991.

It is an arithmetic number, because the mean of its divisors is an integer number (4811985).

Almost surely, 2^12831958 is an apocalyptic number.

12831958 is a deficient number, since it is larger than the sum of its proper divisors (6415982).

12831958 is an equidigital number, since it uses as much as digits as its factorization.

12831958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415981.

The product of its digits is 17280, while the sum is 37.

The square root of 12831958 is about 3582.1722459982. The cubic root of 12831958 is about 234.1159359264.

The spelling of 12831958 in words is "twelve million, eight hundred thirty-one thousand, nine hundred fifty-eight".