1231493 has 8 divisors (see below), whose sum is σ = 1266840. Its totient is φ = 1196800.

The previous prime is 1231487. The next prime is 1231511. The reversal of 1231493 is 3941321.

It can be written as a sum of positive squares in 4 ways, for example, as 351649 + 879844 = 593^2 + 938^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1231493 - 2¹⁰ = 1230469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8921 + ... + 9057.

It is an arithmetic number, because the mean of its divisors is an integer number (158355).

2^1231493 is an apocalyptic number.

It is an amenable number.

1231493 is a deficient number, since it is larger than the sum of its proper divisors (35347).

1231493 is a wasteful number, since it uses less digits than its factorization.

1231493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its digits is 648, while the sum is 23.

The square root of 1231493 is about 1109.7265428924. The cubic root of 1231493 is about 107.1874607094.

The spelling of 1231493 in words is "one million, two hundred thirty-one thousand, four hundred ninety-three".