2311241240 has 128 divisors (see below), whose sum is σ = 6562321920. Its totient is φ = 711628800.

The previous prime is 2311241237. The next prime is 2311241243. The reversal of 2311241240 is 421421132.

It is an interprime number because it is at equal distance from previous prime (2311241237) and next prime (2311241243).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311241243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251120 + ... + 260160.

It is an arithmetic number, because the mean of its divisors is an integer number (51268140).

Almost surely, 2^2311241240 is an apocalyptic number.

2311241240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311241240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3281160960).

2311241240 is an abundant number, since it is smaller than the sum of its proper divisors (4251080680).

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

2311241240 is a wasteful number, since it uses less digits than its factorization.

2311241240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9153 (or 9149 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2311241240 is about 48075.3704093895. The cubic root of 2311241240 is about 1322.1531358055.

Adding to 2311241240 its reverse (421421132), we get a palindrome (2732662372).

The spelling of 2311241240 in words is "two billion, three hundred eleven million, two hundred forty-one thousand, two hundred forty".