1231896 has 16 divisors (see below), whose sum is σ = 3079800. Its totient is φ = 410624.

The previous prime is 1231889. The next prime is 1231943. The reversal of 1231896 is 6981321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25641 + ... + 25688.

2^1231896 is an apocalyptic number.

It is an amenable number.

1231896 is an abundant number, since it is smaller than the sum of its proper divisors (1847904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231896 is a wasteful number, since it uses less digits than its factorization.

1231896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51338 (or 51334 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 1231896 is about 1109.9081043041. The cubic root of 1231896 is about 107.1991516232.

The spelling of 1231896 in words is "one million, two hundred thirty-one thousand, eight hundred ninety-six".