31442404230312 has 128 divisors (see below), whose sum is σ = 81688690339200. Its totient is φ = 10073191145472.

The previous prime is 31442404230311. The next prime is 31442404230331. The reversal of 31442404230312 is 21303240424413.

It is not an unprimeable number, because it can be changed into a prime (31442404230311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133388268 + ... + 133623780.

It is an arithmetic number, because the mean of its divisors is an integer number (638192893275).

Almost surely, 2^{31442404230312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31442404230312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40844345169600).

31442404230312 is an abundant number, since it is smaller than the sum of its proper divisors (50246286108888).

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

31442404230312 is a wasteful number, since it uses less digits than its factorization.

31442404230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236427 (or 236423 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 31442404230312 its reverse (21303240424413), we get a palindrome (52745644654725).

The spelling of 31442404230312 in words is "thirty-one trillion, four hundred forty-two billion, four hundred four million, two hundred thirty thousand, three hundred twelve".