2313222340 has 72 divisors (see below), whose sum is σ = 5750340120. Its totient is φ = 776455680.

The previous prime is 2313222311. The next prime is 2313222371. The reversal of 2313222340 is 432223132.

It can be written as a sum of positive squares in 4 ways, for example, as 121484484 + 2191737856 = 11022^2 + 46816^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5305 + ... + 68224.

It is an arithmetic number, because the mean of its divisors is an integer number (79865835).

Almost surely, 2^2313222340 is an apocalyptic number.

2313222340 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 2313222340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2875170060).

2313222340 is an abundant number, since it is smaller than the sum of its proper divisors (3437117780).

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

2313222340 is a wasteful number, since it uses less digits than its factorization.

2313222340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73573 (or 73560 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2313222340 is about 48095.9701014544. The cubic root of 2313222340 is about 1322.5307928408.

Adding to 2313222340 its reverse (432223132), we get a palindrome (2745445472).

The spelling of 2313222340 in words is "two billion, three hundred thirteen million, two hundred twenty-two thousand, three hundred forty".