31021142304434 has 16 divisors (see below), whose sum is σ = 47010279967872. Its totient is φ = 15351220791648.

The previous prime is 31021142304433. The next prime is 31021142304443. The reversal of 31021142304434 is 43440324112013.

It is a super-2 number, since 2×31021142304434² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31021142304434.

It is not an unprimeable number, because it can be changed into a prime (31021142304433) 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 7 ways as a sum of consecutive naturals, for example, 42590414 + ... + 43312649.

It is an arithmetic number, because the mean of its divisors is an integer number (2938142497992).

Almost surely, 2^{31021142304434} is an apocalyptic number.

31021142304434 is a deficient number, since it is larger than the sum of its proper divisors (15989137663438).

31021142304434 is a wasteful number, since it uses less digits than its factorization.

31021142304434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85904921.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 31021142304434 its reverse (43440324112013), we get a palindrome (74461466416447).

The spelling of 31021142304434 in words is "thirty-one trillion, twenty-one billion, one hundred forty-two million, three hundred four thousand, four hundred thirty-four".