31136334216 has 48 divisors (see below), whose sum is σ = 84289199760. Its totient is φ = 9580409280.

The previous prime is 31136334193. The next prime is 31136334217. The reversal of 31136334216 is 61243363113.

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 (31136334217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3834250 + ... + 3842361.

It is an arithmetic number, because the mean of its divisors is an integer number (1756024995).

Almost surely, 2^31136334216 is an apocalyptic number.

It is an amenable number.

31136334216 is an abundant number, since it is smaller than the sum of its proper divisors (53152865544).

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

31136334216 is a wasteful number, since it uses less digits than its factorization.

31136334216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676646 (or 7676629 counting only the distinct ones).

The product of its digits is 23328, while the sum is 33.

Adding to 31136334216 its reverse (61243363113), we get a palindrome (92379697329).

The spelling of 31136334216 in words is "thirty-one billion, one hundred thirty-six million, three hundred thirty-four thousand, two hundred sixteen".