31143332022 has 128 divisors (see below), whose sum is σ = 75381166080. Its totient is φ = 8466480000.

The previous prime is 31143332021. The next prime is 31143332039. The reversal of 31143332022 is 22023334113.

It is a junction number, because it is equal to n+sod(n) for n = 31143331983 and 31143332001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31143332021) 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, 2907697 + ... + 2918387.

It is an arithmetic number, because the mean of its divisors is an integer number (588915360).

Almost surely, 2^31143332022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31143332022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37690583040).

31143332022 is an abundant number, since it is smaller than the sum of its proper divisors (44237834058).

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

31143332022 is a wasteful number, since it uses less digits than its factorization.

31143332022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10850.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31143332022 its reverse (22023334113), we get a palindrome (53166666135).

The spelling of 31143332022 in words is "thirty-one billion, one hundred forty-three million, three hundred thirty-two thousand, twenty-two".