2265312140 has 72 divisors (see below), whose sum is σ = 5959546992. Its totient is φ = 716929920.

The previous prime is 2265312059. The next prime is 2265312149. The reversal of 2265312140 is 412135622.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (2265312149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76166 + ... + 101645.

It is an arithmetic number, because the mean of its divisors is an integer number (82771486).

Almost surely, 2^2265312140 is an apocalyptic number.

2265312140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2265312140 is an abundant number, since it is smaller than the sum of its proper divisors (3694234852).

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

2265312140 is a wasteful number, since it uses less digits than its factorization.

2265312140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177847 (or 177838 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2265312140 is about 47595.2953557387. The cubic root of 2265312140 is about 1313.3365097080.

Adding to 2265312140 its reverse (412135622), we get a palindrome (2677447762).

The spelling of 2265312140 in words is "two billion, two hundred sixty-five million, three hundred twelve thousand, one hundred forty".