2431311240 has 64 divisors (see below), whose sum is σ = 7297257600. Its totient is φ = 648054272.

The previous prime is 2431311229. The next prime is 2431311271. The reversal of 2431311240 is 421131342.

It is a super-2 number, since 2×2431311240² = 11822548691500675200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428341 + ... + 433979.

It is an arithmetic number, because the mean of its divisors is an integer number (114019650).

Almost surely, 2^2431311240 is an apocalyptic number.

2431311240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2431311240 is an abundant number, since it is smaller than the sum of its proper divisors (4865946360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2431311240 is a wasteful number, since it uses less digits than its factorization.

2431311240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9246 (or 9242 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2431311240 is about 49308.3283026306. The cubic root of 2431311240 is about 1344.6631992978.

Adding to 2431311240 its reverse (421131342), we get a palindrome (2852442582).

It can be divided in two parts, 24313 and 11240, that added together give a palindrome (35553).

The spelling of 2431311240 in words is "two billion, four hundred thirty-one million, three hundred eleven thousand, two hundred forty".