3131303322 has 64 divisors (see below), whose sum is σ = 7542190080. Its totient is φ = 846645696.

The previous prime is 3131303249. The next prime is 3131303327. The reversal of 3131303322 is 2233031313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (3131303327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1057468 + ... + 1060424.

It is an arithmetic number, because the mean of its divisors is an integer number (117846720).

Almost surely, 2^3131303322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131303322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3771095040).

3131303322 is an abundant number, since it is smaller than the sum of its proper divisors (4410886758).

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

3131303322 is a wasteful number, since it uses less digits than its factorization.

3131303322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4315.

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

The square root of 3131303322 is about 55958.0496622246. The cubic root of 3131303322 is about 1462.9911969478.

Adding to 3131303322 its reverse (2233031313), we get a palindrome (5364334635).

The spelling of 3131303322 in words is "three billion, one hundred thirty-one million, three hundred three thousand, three hundred twenty-two".