2315440344 has 128 divisors (see below), whose sum is σ = 6857441280. Its totient is φ = 637545600.

The previous prime is 2315440321. The next prime is 2315440397. The reversal of 2315440344 is 4430445132.

It is a super-2 number, since 2×2315440344² = 10722527973245676672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1473079 + ... + 1474649.

It is an arithmetic number, because the mean of its divisors is an integer number (53573760).

Almost surely, 2^2315440344 is an apocalyptic number.

2315440344 is a gapful number since it is divisible by the number (24) 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 2315440344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3428720640).

2315440344 is an abundant number, since it is smaller than the sum of its proper divisors (4542000936).

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

2315440344 is a wasteful number, since it uses less digits than its factorization.

2315440344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2315440344 is about 48119.0226833422. The cubic root of 2315440344 is about 1322.9533551244.

Adding to 2315440344 its reverse (4430445132), we get a palindrome (6745885476).

The spelling of 2315440344 in words is "two billion, three hundred fifteen million, four hundred forty thousand, three hundred forty-four".