31103332213 has 8 divisors (see below), whose sum is σ = 32656099680. Its totient is φ = 29582580720.

The previous prime is 31103332199. The next prime is 31103332261. The reversal of 31103332213 is 31223330113.

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

It is a cyclic number.

It is not a de Polignac number, because 31103332213 - 2¹⁷ = 31103201141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103330213) 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, 8002003 + ... + 8005888.

It is an arithmetic number, because the mean of its divisors is an integer number (4082012460).

Almost surely, 2^31103332213 is an apocalyptic number.

It is an amenable number.

31103332213 is a deficient number, since it is larger than the sum of its proper divisors (1552767467).

31103332213 is a wasteful number, since it uses less digits than its factorization.

31103332213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16007987.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31103332213 its reverse (31223330113), we get a palindrome (62326662326).

The spelling of 31103332213 in words is "thirty-one billion, one hundred three million, three hundred thirty-two thousand, two hundred thirteen".