1231712 has 24 divisors (see below), whose sum is σ = 2468592. Its totient is φ = 604800.

The previous prime is 1231709. The next prime is 1231721. The reversal of 1231712 is 2171321.

It is a super-2 number, since 2×1231712² = 3034228901888, which contains 22 as substring.

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, 1637 + ... + 2267.

It is an arithmetic number, because the mean of its divisors is an integer number (102858).

2^1231712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234296).

1231712 is an abundant number, since it is smaller than the sum of its proper divisors (1236880).

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

1231712 is an equidigital number, since it uses as much as digits as its factorization.

1231712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 694 counting only the distinct ones).

The product of its digits is 84, while the sum is 17.

The square root of 1231712 is about 1109.8252114635. The cubic root of 1231712 is about 107.1938141526.

The spelling of 1231712 in words is "one million, two hundred thirty-one thousand, seven hundred twelve".