1240233231 has 16 divisors (see below), whose sum is σ = 1725948000. Its totient is φ = 791431680.

The previous prime is 1240233223. The next prime is 1240233257. The reversal of 1240233231 is 1323320421.

It is not a de Polignac number, because 1240233231 - 2³ = 1240233223 is a prime.

It is a super-2 number, since 2×1240233231² = 3076356934553398722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240233198 and 1240233207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240233271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88606 + ... + 101643.

It is an arithmetic number, because the mean of its divisors is an integer number (107871750).

Almost surely, 2^1240233231 is an apocalyptic number.

1240233231 is a deficient number, since it is larger than the sum of its proper divisors (485714769).

1240233231 is a wasteful number, since it uses less digits than its factorization.

1240233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190346.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1240233231 is about 35216.9452252747. The cubic root of 1240233231 is about 1074.4044239463.

Adding to 1240233231 its reverse (1323320421), we get a palindrome (2563553652).

The spelling of 1240233231 in words is "one billion, two hundred forty million, two hundred thirty-three thousand, two hundred thirty-one".