31031442331134 has 64 divisors (see below), whose sum is σ = 71014454883840. Its totient is φ = 8855447368320.

The previous prime is 31031442331133. The next prime is 31031442331261. The reversal of 31031442331134 is 43113324413013.

It is a junction number, because it is equal to n+sod(n) for n = 31031442331095 and 31031442331104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031442331133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803300532 + ... + 803339160.

It is an arithmetic number, because the mean of its divisors is an integer number (1109600857560).

Almost surely, 2^{31031442331134} is an apocalyptic number.

31031442331134 is an abundant number, since it is smaller than the sum of its proper divisors (39983012552706).

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

31031442331134 is a wasteful number, since it uses less digits than its factorization.

31031442331134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61185.

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

Adding to 31031442331134 its reverse (43113324413013), we get a palindrome (74144766744147).

The spelling of 31031442331134 in words is "thirty-one trillion, thirty-one billion, four hundred forty-two million, three hundred thirty-one thousand, one hundred thirty-four".