31220123241342 has 64 divisors (see below), whose sum is σ = 75563214750720. Its totient is φ = 8394741766656.

The previous prime is 31220123241313. The next prime is 31220123241343. The reversal of 31220123241342 is 24314232102213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220123241343) 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, 8769084 + ... + 11804112.

It is an arithmetic number, because the mean of its divisors is an integer number (1180675230480).

Almost surely, 2^{31220123241342} is an apocalyptic number.

31220123241342 is an abundant number, since it is smaller than the sum of its proper divisors (44343091509378).

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

31220123241342 is a wasteful number, since it uses less digits than its factorization.

31220123241342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049465.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 31220123241342 its reverse (24314232102213), we get a palindrome (55534355343555).

The spelling of 31220123241342 in words is "thirty-one trillion, two hundred twenty billion, one hundred twenty-three million, two hundred forty-one thousand, three hundred forty-two".