31334421536 has 48 divisors (see below), whose sum is σ = 67436349120. Its totient is φ = 14213594880.

The previous prime is 31334421529. The next prime is 31334421541. The reversal of 31334421536 is 63512443313.

It is a junction number, because it is equal to n+sod(n) for n = 31334421496 and 31334421505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80030 + ... + 262818.

It is an arithmetic number, because the mean of its divisors is an integer number (1404923940).

Almost surely, 2^31334421536 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 31334421536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33718174560).

31334421536 is an abundant number, since it is smaller than the sum of its proper divisors (36101927584).

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

31334421536 is a wasteful number, since it uses less digits than its factorization.

31334421536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183297 (or 183289 counting only the distinct ones).

The product of its digits is 77760, while the sum is 35.

Adding to 31334421536 its reverse (63512443313), we get a palindrome (94846864849).

The spelling of 31334421536 in words is "thirty-one billion, three hundred thirty-four million, four hundred twenty-one thousand, five hundred thirty-six".