4312346520 has 128 divisors (see below), whose sum is σ = 13152061440. Its totient is φ = 1130941440.

The previous prime is 4312346483. The next prime is 4312346551. The reversal of 4312346520 is 256432134.

It is a super-2 number, since 2×4312346520² = 37192665017112220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5316915 + ... + 5317725.

It is an arithmetic number, because the mean of its divisors is an integer number (102750480).

Almost surely, 2^4312346520 is an apocalyptic number.

4312346520 is a gapful number since it is divisible by the number (40) 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 4312346520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6576030720).

4312346520 is an abundant number, since it is smaller than the sum of its proper divisors (8839714920).

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

4312346520 is a wasteful number, since it uses less digits than its factorization.

4312346520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 4312346520 is about 65668.4590956724. The cubic root of 4312346520 is about 1627.6882078516.

Adding to 4312346520 its reverse (256432134), we get a palindrome (4568778654).

The spelling of 4312346520 in words is "four billion, three hundred twelve million, three hundred forty-six thousand, five hundred twenty".