31111330324242 has 192 divisors, whose sum is σ = 78660523560960. Its totient is φ = 8148247228800.

The previous prime is 31111330324241. The next prime is 31111330324247. The reversal of 31111330324242 is 24242303311113.

It is not an unprimeable number, because it can be changed into a prime (31111330324241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2308469208 + ... + 2308482684.

It is an arithmetic number, because the mean of its divisors is an integer number (409690226880).

Almost surely, 2^{31111330324242} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31111330324242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39330261780480).

31111330324242 is an abundant number, since it is smaller than the sum of its proper divisors (47549193236718).

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

31111330324242 is a wasteful number, since it uses less digits than its factorization.

31111330324242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26877 (or 26870 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31111330324242 its reverse (24242303311113), we get a palindrome (55353633635355).

The spelling of 31111330324242 in words is "thirty-one trillion, one hundred eleven billion, three hundred thirty million, three hundred twenty-four thousand, two hundred forty-two".