31142144334 has 48 divisors (see below), whose sum is σ = 74951557200. Its totient is φ = 8590934016.

The previous prime is 31142144333. The next prime is 31142144381. The reversal of 31142144334 is 43344124113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142144333) by changing a digit.

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, 1817779 + ... + 1834830.

It is an arithmetic number, because the mean of its divisors is an integer number (1561490775).

Almost surely, 2^31142144334 is an apocalyptic number.

31142144334 is an abundant number, since it is smaller than the sum of its proper divisors (43809412866).

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

31142144334 is a wasteful number, since it uses less digits than its factorization.

31142144334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652657 (or 3652650 counting only the distinct ones).

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

Adding to 31142144334 its reverse (43344124113), we get a palindrome (74486268447).

The spelling of 31142144334 in words is "thirty-one billion, one hundred forty-two million, one hundred forty-four thousand, three hundred thirty-four".