31130133210 has 96 divisors (see below), whose sum is σ = 88429468608. Its totient is φ = 7535324160.

The previous prime is 31130133179. The next prime is 31130133283. The reversal of 31130133210 is 1233103113.

It is a happy number.

31130133210 is a `hidden beast` number, since 31 + 1 + 301 + 332 + 1 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642909 + ... + 689631.

It is an arithmetic number, because the mean of its divisors is an integer number (921140298).

Almost surely, 2^31130133210 is an apocalyptic number.

31130133210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31130133210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44214734304).

31130133210 is an abundant number, since it is smaller than the sum of its proper divisors (57299335398).

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

31130133210 is a wasteful number, since it uses less digits than its factorization.

31130133210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47420 (or 47417 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31130133210 its reverse (1233103113), we get a palindrome (32363236323).

The spelling of 31130133210 in words is "thirty-one billion, one hundred thirty million, one hundred thirty-three thousand, two hundred ten".