313012221132 has 192 divisors, whose sum is σ = 889736762880. Its totient is φ = 84592594944.

The previous prime is 313012221131. The next prime is 313012221163. The reversal of 313012221132 is 231122210313.

It is a super-2 number, since 2×313012221132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313012221099 and 313012221108.

It is not an unprimeable number, because it can be changed into a prime (313012221131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3329638 + ... + 3422354.

It is an arithmetic number, because the mean of its divisors is an integer number (4634045640).

Almost surely, 2^313012221132 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 313012221132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444868381440).

313012221132 is an abundant number, since it is smaller than the sum of its proper divisors (576724541748).

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

313012221132 is a wasteful number, since it uses less digits than its factorization.

313012221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92840 (or 92838 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 313012221132 its reverse (231122210313), we get a palindrome (544134431445).

The spelling of 313012221132 in words is "three hundred thirteen billion, twelve million, two hundred twenty-one thousand, one hundred thirty-two".