31130103300 has 144 divisors (see below), whose sum is σ = 91179080832. Its totient is φ = 8199475200.

The previous prime is 31130103241. The next prime is 31130103307. The reversal of 31130103300 is 330103113.

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 31130103300.

It is not an unprimeable number, because it can be changed into a prime (31130103307) 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, 23890449 + ... + 23891751.

Almost surely, 2^31130103300 is an apocalyptic number.

31130103300 is a gapful number since it is divisible by the number (30) 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 31130103300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45589540416).

31130103300 is an abundant number, since it is smaller than the sum of its proper divisors (60048977532).

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

31130103300 is a wasteful number, since it uses less digits than its factorization.

31130103300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 15.

Adding to 31130103300 its reverse (330103113), we get a palindrome (31460206413).

The spelling of 31130103300 in words is "thirty-one billion, one hundred thirty million, one hundred three thousand, three hundred".