313231133221242 has 16 divisors (see below), whose sum is σ = 626683085040672. Its totient is φ = 104373574640720.

The previous prime is 313231133221217. The next prime is 313231133221243. The reversal of 313231133221242 is 242122331132313.

It is a super-2 number, since 2×313231133221242² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (313231133221243) 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, 9200756484 + ... + 9200790527.

It is an arithmetic number, because the mean of its divisors is an integer number (39167692815042).

Almost surely, 2^{313231133221242} is an apocalyptic number.

313231133221242 is an abundant number, since it is smaller than the sum of its proper divisors (313451951819430).

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

313231133221242 is a wasteful number, since it uses less digits than its factorization.

313231133221242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18401549853.

The product of its digits is 31104, while the sum is 33.

Adding to 313231133221242 its reverse (242122331132313), we get a palindrome (555353464353555).

The spelling of 313231133221242 in words is "three hundred thirteen trillion, two hundred thirty-one billion, one hundred thirty-three million, two hundred twenty-one thousand, two hundred forty-two".