20130331332 has 24 divisors (see below), whose sum is σ = 46985043616. Its totient is φ = 6708071808.

The previous prime is 20130331321. The next prime is 20130331357. The reversal of 20130331332 is 23313303102.

It is a super-2 number, since 2×20130331332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20130331299 and 20130331308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213418 + ... + 292929.

Almost surely, 2^20130331332 is an apocalyptic number.

It is an amenable number.

20130331332 is an abundant number, since it is smaller than the sum of its proper divisors (26854712284).

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

20130331332 is a wasteful number, since it uses less digits than its factorization.

20130331332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509667 (or 509665 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20130331332 its reverse (23313303102), we get a palindrome (43443634434).

The spelling of 20130331332 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, three hundred thirty-two".