31212230206 has 8 divisors (see below), whose sum is σ = 46819103184. Its totient is φ = 15605862480.

The previous prime is 31212230191. The next prime is 31212230207. The reversal of 31212230206 is 60203221213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212230207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142791 + ... + 287773.

It is an arithmetic number, because the mean of its divisors is an integer number (5852387898).

Almost surely, 2^31212230206 is an apocalyptic number.

31212230206 is a deficient number, since it is larger than the sum of its proper divisors (15606872978).

31212230206 is a wasteful number, since it uses less digits than its factorization.

31212230206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252626.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31212230206 its reverse (60203221213), we get a palindrome (91415451419).

The spelling of 31212230206 in words is "thirty-one billion, two hundred twelve million, two hundred thirty thousand, two hundred six".