31344342143020 has 72 divisors (see below), whose sum is σ = 67261473251280. Its totient is φ = 12269504972160.

The previous prime is 31344342143011. The next prime is 31344342143041. The reversal of 31344342143020 is 2034124344313.

It is a super-2 number, since 2×31344342143020² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413972926 + ... + 414048634.

It is an arithmetic number, because the mean of its divisors is an integer number (934187128490).

Almost surely, 2^{31344342143020} is an apocalyptic number.

It is an amenable number.

31344342143020 is an abundant number, since it is smaller than the sum of its proper divisors (35917131108260).

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

31344342143020 is a wasteful number, since it uses less digits than its factorization.

31344342143020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85183 (or 85134 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 31344342143020 its reverse (2034124344313), we get a palindrome (33378466487333).

The spelling of 31344342143020 in words is "thirty-one trillion, three hundred forty-four billion, three hundred forty-two million, one hundred forty-three thousand, twenty".