10302131220 has 24 divisors (see below), whose sum is σ = 28845967584. Its totient is φ = 2747234976.

The previous prime is 10302131209. The next prime is 10302131243. The reversal of 10302131220 is 2213120301.

It is a super-2 number, since 2×10302131220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 10302131220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85851034 + ... + 85851153.

It is an arithmetic number, because the mean of its divisors is an integer number (1201915316).

Almost surely, 2^10302131220 is an apocalyptic number.

10302131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10302131220 is an abundant number, since it is smaller than the sum of its proper divisors (18543836364).

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

10302131220 is a wasteful number, since it uses less digits than its factorization.

10302131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171702199 (or 171702197 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 10302131220 its reverse (2213120301), we get a palindrome (12515251521).

The spelling of 10302131220 in words is "ten billion, three hundred two million, one hundred thirty-one thousand, two hundred twenty".