20313311332 has 6 divisors (see below), whose sum is σ = 35548294838. Its totient is φ = 10156655664.

The previous prime is 20313311329. The next prime is 20313311341. The reversal of 20313311332 is 23311331302.

It can be written as a sum of positive squares in only one way, i.e., 20026212196 + 287099136 = 141514^2 + 16944^2 .

It is a super-4 number, since 4×20313311332⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539163913 + ... + 2539163920.

Almost surely, 2^20313311332 is an apocalyptic number.

It is an amenable number.

20313311332 is a deficient number, since it is larger than the sum of its proper divisors (15234983506).

20313311332 is a wasteful number, since it uses less digits than its factorization.

20313311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078327837 (or 5078327835 counting only the distinct ones).

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

Adding to 20313311332 its reverse (23311331302), we get a palindrome (43624642634).

The spelling of 20313311332 in words is "twenty billion, three hundred thirteen million, three hundred eleven thousand, three hundred thirty-two".