31010232216 has 32 divisors (see below), whose sum is σ = 77695248240. Its totient is φ = 10314121728.

The previous prime is 31010232163. The next prime is 31010232217. The reversal of 31010232216 is 61223201013.

It is a junction number, because it is equal to n+sod(n) for n = 31010232192 and 31010232201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010232217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402701 + ... + 1424636.

Almost surely, 2^31010232216 is an apocalyptic number.

It is an amenable number.

31010232216 is an abundant number, since it is smaller than the sum of its proper divisors (46685016024).

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

31010232216 is a wasteful number, since it uses less digits than its factorization.

31010232216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827803 (or 2827799 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31010232216 its reverse (61223201013), we get a palindrome (92233433229).

The spelling of 31010232216 in words is "thirty-one billion, ten million, two hundred thirty-two thousand, two hundred sixteen".