103130311020 has 144 divisors (see below), whose sum is σ = 317615848704. Its totient is φ = 24984502400.

The previous prime is 103130311019. The next prime is 103130311021. The reversal of 103130311020 is 20113031301.

It is an interprime number because it is at equal distance from previous prime (103130311019) and next prime (103130311021).

It is a super-2 number, since 2×103130311020² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (103130311021) 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, 13405375 + ... + 13413065.

It is an arithmetic number, because the mean of its divisors is an integer number (2205665616).

Almost surely, 2^103130311020 is an apocalyptic number.

103130311020 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 103130311020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158807924352).

103130311020 is an abundant number, since it is smaller than the sum of its proper divisors (214485537684).

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

103130311020 is a wasteful number, since it uses less digits than its factorization.

103130311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572 (or 9559 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 103130311020 its reverse (20113031301), we get a palindrome (123243342321).

The spelling of 103130311020 in words is "one hundred three billion, one hundred thirty million, three hundred eleven thousand, twenty".