31232361216 has 144 divisors (see below), whose sum is σ = 95871776000. Its totient is φ = 8841498624.

The previous prime is 31232361211. The next prime is 31232361263. The reversal of 31232361216 is 61216323213.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31232361211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559335 + ... + 612633.

Almost surely, 2^31232361216 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 31232361216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47935888000).

31232361216 is an abundant number, since it is smaller than the sum of its proper divisors (64639414784).

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

31232361216 is a wasteful number, since it uses less digits than its factorization.

31232361216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53434 (or 53420 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

Adding to 31232361216 its reverse (61216323213), we get a palindrome (92448684429).

The spelling of 31232361216 in words is "thirty-one billion, two hundred thirty-two million, three hundred sixty-one thousand, two hundred sixteen".