133131221310 has 64 divisors (see below), whose sum is σ = 334351991808. Its totient is φ = 33861848064.

The previous prime is 133131221303. The next prime is 133131221351. The reversal of 133131221310 is 13122131331.

It is a happy number.

It is a super-3 number, since 3×133131221310³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29722 + ... + 516861.

It is an arithmetic number, because the mean of its divisors is an integer number (5224249872).

Almost surely, 2^133131221310 is an apocalyptic number.

133131221310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133131221310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167175995904).

133131221310 is an abundant number, since it is smaller than the sum of its proper divisors (201220770498).

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

133131221310 is a wasteful number, since it uses less digits than its factorization.

133131221310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546969.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 133131221310 its reverse (13122131331), we get a palindrome (146253352641).

The spelling of 133131221310 in words is "one hundred thirty-three billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred ten".