31000332102213 has 16 divisors (see below), whose sum is σ = 43795930404096. Its totient is φ = 19437519582720.

The previous prime is 31000332102197. The next prime is 31000332102241. The reversal of 31000332102213 is 31220123300013.

It is not a de Polignac number, because 31000332102213 - 2⁴ = 31000332102197 is a prime.

It is a super-2 number, since 2×31000332102213² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31000332102213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000332102263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213507768 + ... + 213652913.

It is an arithmetic number, because the mean of its divisors is an integer number (2737245650256).

Almost surely, 2^{31000332102213} is an apocalyptic number.

It is an amenable number.

31000332102213 is a deficient number, since it is larger than the sum of its proper divisors (12795598301883).

31000332102213 is a wasteful number, since it uses less digits than its factorization.

31000332102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427162124.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31000332102213 its reverse (31220123300013), we get a palindrome (62220455402226).

The spelling of 31000332102213 in words is "thirty-one trillion, three hundred thirty-two million, one hundred two thousand, two hundred thirteen".