31041222216 has 32 divisors (see below), whose sum is σ = 82167942240. Its totient is φ = 9738422528.

The previous prime is 31041222209. The next prime is 31041222253. The reversal of 31041222216 is 61222214013.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 38040306 + ... + 38041121.

It is an arithmetic number, because the mean of its divisors is an integer number (2567748195).

Almost surely, 2^31041222216 is an apocalyptic number.

It is an amenable number.

31041222216 is an abundant number, since it is smaller than the sum of its proper divisors (51126720024).

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

31041222216 is a wasteful number, since it uses less digits than its factorization.

31041222216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76081453 (or 76081449 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 31041222216 its reverse (61222214013), we get a palindrome (92263436229).

The spelling of 31041222216 in words is "thirty-one billion, forty-one million, two hundred twenty-two thousand, two hundred sixteen".