1240411231 has 4 divisors (see below), whose sum is σ = 1240833672. Its totient is φ = 1239988792.

The previous prime is 1240411213. The next prime is 1240411243. The reversal of 1240411231 is 1321140421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321140421 = 431 ⋅3065291.

It is a cyclic number.

It is not a de Polignac number, because 1240411231 - 2¹³ = 1240403039 is a prime.

It is a super-2 number, since 2×1240411231² = 3077240043981870722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240411199 and 1240411208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240411261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206785 + ... + 212698.

It is an arithmetic number, because the mean of its divisors is an integer number (310208418).

Almost surely, 2^1240411231 is an apocalyptic number.

1240411231 is a deficient number, since it is larger than the sum of its proper divisors (422441).

1240411231 is an equidigital number, since it uses as much as digits as its factorization.

1240411231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422440.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1240411231 is about 35219.4723271090. The cubic root of 1240411231 is about 1074.4558214937.

Adding to 1240411231 its reverse (1321140421), we get a palindrome (2561551652).

The spelling of 1240411231 in words is "one billion, two hundred forty million, four hundred eleven thousand, two hundred thirty-one".