3240405231 has 48 divisors (see below), whose sum is σ = 5210569728. Its totient is φ = 1784160000.

The previous prime is 3240405221. The next prime is 3240405239. The reversal of 3240405231 is 1325040423.

It is not a de Polignac number, because 3240405231 - 2¹¹ = 3240403183 is a prime.

It is a super-2 number, since 2×3240405231² = 21000452122184326722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3240405239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1142391 + ... + 1145223.

It is an arithmetic number, because the mean of its divisors is an integer number (108553536).

Almost surely, 2^3240405231 is an apocalyptic number.

3240405231 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3240405231 is a deficient number, since it is larger than the sum of its proper divisors (1970164497).

3240405231 is a wasteful number, since it uses less digits than its factorization.

3240405231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3125 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3240405231 is about 56924.5573632330. The cubic root of 3240405231 is about 1479.7889324948.

Adding to 3240405231 its reverse (1325040423), we get a palindrome (4565445654).

The spelling of 3240405231 in words is "three billion, two hundred forty million, four hundred five thousand, two hundred thirty-one".