31130301100 has 72 divisors (see below), whose sum is σ = 71207595200. Its totient is φ = 11780251200.

The previous prime is 31130301089. The next prime is 31130301107. The reversal of 31130301100 is 110303113.

It is a happy number.

It is a super-2 number, since 2×31130301100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31130301107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1393015 + ... + 1415185.

Almost surely, 2^31130301100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31130301100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35603797600).

31130301100 is an abundant number, since it is smaller than the sum of its proper divisors (40077294100).

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

31130301100 is a wasteful number, since it uses less digits than its factorization.

31130301100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22943 (or 22936 counting only the distinct ones).

The product of its (nonzero) digits is 27, while the sum is 13.

Adding to 31130301100 its reverse (110303113), we get a palindrome (31240604213).

The spelling of 31130301100 in words is "thirty-one billion, one hundred thirty million, three hundred one thousand, one hundred".