10303513220 has 144 divisors (see below), whose sum is σ = 29570764608. Its totient is φ = 2964407040.

The previous prime is 10303513201. The next prime is 10303513223. The reversal of 10303513220 is 2231530301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10303513192 and 10303513201.

It is not an unprimeable number, because it can be changed into a prime (10303513223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103379 + ... + 176901.

It is an arithmetic number, because the mean of its divisors is an integer number (205352532).

Almost surely, 2^10303513220 is an apocalyptic number.

10303513220 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 10303513220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14785382304).

10303513220 is an abundant number, since it is smaller than the sum of its proper divisors (19267251388).

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

10303513220 is a wasteful number, since it uses less digits than its factorization.

10303513220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73570 (or 73561 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The spelling of 10303513220 in words is "ten billion, three hundred three million, five hundred thirteen thousand, two hundred twenty".