31130330223100 has 72 divisors (see below), whose sum is σ = 69427335268928. Its totient is φ = 12107071814400.

The previous prime is 31130330223059. The next prime is 31130330223103. The reversal of 31130330223100 is 132203303113.

It is a super-2 number, since 2×31130330223100² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130330223103) 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, 2308810 + ... + 8221390.

Almost surely, 2^{31130330223100} 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 31130330223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34713667634464).

31130330223100 is an abundant number, since it is smaller than the sum of its proper divisors (38297005045828).

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

31130330223100 is a wasteful number, since it uses less digits than its factorization.

31130330223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5914055 (or 5914048 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31130330223100 its reverse (132203303113), we get a palindrome (31262533526213).

The spelling of 31130330223100 in words is "thirty-one trillion, one hundred thirty billion, three hundred thirty million, two hundred twenty-three thousand, one hundred".