31222133530242 has 16 divisors (see below), whose sum is σ = 62493089802240. Its totient is φ = 10399240719792.

The previous prime is 31222133530229. The next prime is 31222133530243. The reversal of 31222133530242 is 24203533122213.

It is not an unprimeable number, because it can be changed into a prime (31222133530243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2034272593 + ... + 2034287940.

It is an arithmetic number, because the mean of its divisors is an integer number (3905818112640).

Almost surely, 2^{31222133530242} is an apocalyptic number.

31222133530242 is an abundant number, since it is smaller than the sum of its proper divisors (31270956271998).

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

31222133530242 is a wasteful number, since it uses less digits than its factorization.

31222133530242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068561817.

The product of its (nonzero) digits is 51840, while the sum is 33.

Adding to 31222133530242 its reverse (24203533122213), we get a palindrome (55425666652455).

The spelling of 31222133530242 in words is "thirty-one trillion, two hundred twenty-two billion, one hundred thirty-three million, five hundred thirty thousand, two hundred forty-two".