1231726 has 8 divisors (see below), whose sum is σ = 1857744. Its totient is φ = 612480.

The previous prime is 1231721. The next prime is 1231733. The reversal of 1231726 is 6271321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1231697 and 1231706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1210 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (232218).

2^1231726 is an apocalyptic number.

1231726 is a deficient number, since it is larger than the sum of its proper divisors (626018).

1231726 is a wasteful number, since it uses less digits than its factorization.

1231726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its digits is 504, while the sum is 22.

The square root of 1231726 is about 1109.8315187451. The cubic root of 1231726 is about 107.1942202832.

It can be divided in two parts, 123 and 1726, that added together give a square (1849 = 43²).

The spelling of 1231726 in words is "one million, two hundred thirty-one thousand, seven hundred twenty-six".