31031022213 has 16 divisors (see below), whose sum is σ = 45975312000. Its totient is φ = 20685805920.

The previous prime is 31031022173. The next prime is 31031022271. The reversal of 31031022213 is 31222013013.

31031022213 is a `hidden beast` number, since 310 + 310 + 22 + 21 + 3 = 666.

It is not a de Polignac number, because 31031022213 - 2¹⁴ = 31031005829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031022293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415008 + ... + 484038.

It is an arithmetic number, because the mean of its divisors is an integer number (2873457000).

Almost surely, 2^31031022213 is an apocalyptic number.

It is an amenable number.

31031022213 is a deficient number, since it is larger than the sum of its proper divisors (14944289787).

31031022213 is a wasteful number, since it uses less digits than its factorization.

31031022213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85689 (or 85683 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31031022213 its reverse (31222013013), we get a palindrome (62253035226).

The spelling of 31031022213 in words is "thirty-one billion, thirty-one million, twenty-two thousand, two hundred thirteen".