2311007640 has 64 divisors (see below), whose sum is σ = 7102136160. Its totient is φ = 601236480.

The previous prime is 2311007597. The next prime is 2311007687. The reversal of 2311007640 is 467001132.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2311007640.

It is a congruent number.

It is an unprimeable number.

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, 229939 + ... + 239778.

Almost surely, 2^2311007640 is an apocalyptic number.

2311007640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311007640 is an abundant number, since it is smaller than the sum of its proper divisors (4791128520).

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

2311007640 is a wasteful number, since it uses less digits than its factorization.

2311007640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469772 (or 469768 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 2311007640 is about 48072.9408295353. The cubic root of 2311007640 is about 1322.1085904225.

Adding to 2311007640 its reverse (467001132), we get a palindrome (2778008772).

The spelling of 2311007640 in words is "two billion, three hundred eleven million, seven thousand, six hundred forty".