31031101032213 has 16 divisors (see below), whose sum is σ = 41672789928000. Its totient is φ = 20538408756480.

The previous prime is 31031101032137. The next prime is 31031101032287. The reversal of 31031101032213 is 31223010113013.

It is a happy number.

It is not a de Polignac number, because 31031101032213 - 2¹⁴ = 31031101015829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31031101032213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31031101052213) 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, 77424253 + ... + 77824013.

It is an arithmetic number, because the mean of its divisors is an integer number (2604549370500).

Almost surely, 2^{31031101032213} is an apocalyptic number.

It is an amenable number.

31031101032213 is a deficient number, since it is larger than the sum of its proper divisors (10641688895787).

31031101032213 is a wasteful number, since it uses less digits than its factorization.

31031101032213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586052.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31031101032213 its reverse (31223010113013), we get a palindrome (62254111145226).

The spelling of 31031101032213 in words is "thirty-one trillion, thirty-one billion, one hundred one million, thirty-two thousand, two hundred thirteen".