1240331 has 4 divisors (see below), whose sum is σ = 1243032. Its totient is φ = 1237632.

The previous prime is 1240319. The next prime is 1240333. The reversal of 1240331 is 1330421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330421 = 149 ⋅8929.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1240331 is a prime.

It is a super-2 number, since 2×1240331² = 3076841979122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470 + ... + 1643.

It is an arithmetic number, because the mean of its divisors is an integer number (310758).

2^1240331 is an apocalyptic number.

1240331 is a deficient number, since it is larger than the sum of its proper divisors (2701).

1240331 is an equidigital number, since it uses as much as digits as its factorization.

1240331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1240331 is about 1113.7014860365. The cubic root of 1240331 is about 107.4432655380.

Adding to 1240331 its reverse (1330421), we get a palindrome (2570752).

The spelling of 1240331 in words is "one million, two hundred forty thousand, three hundred thirty-one".