10315323440 has 80 divisors (see below), whose sum is σ = 25427539200. Its totient is φ = 3880763136.

The previous prime is 10315323433. The next prime is 10315323457. The reversal of 10315323440 is 4432351301.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186869 + ... + 235691.

It is an arithmetic number, because the mean of its divisors is an integer number (317844240).

Almost surely, 2^10315323440 is an apocalyptic number.

10315323440 is a gapful number since it is divisible by the number (10) 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 10315323440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12713769600).

10315323440 is an abundant number, since it is smaller than the sum of its proper divisors (15112215760).

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

10315323440 is a wasteful number, since it uses less digits than its factorization.

10315323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48994 (or 48988 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 10315323440 its reverse (4432351301), we get a palindrome (14747674741).

The spelling of 10315323440 in words is "ten billion, three hundred fifteen million, three hundred twenty-three thousand, four hundred forty".