31010212121223 has 16 divisors (see below), whose sum is σ = 42373382125536. Its totient is φ = 20160686300160.

The previous prime is 31010212121219. The next prime is 31010212121269. The reversal of 31010212121223 is 32212121201013.

It is not a de Polignac number, because 31010212121223 - 2² = 31010212121219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31010212121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010212121123) 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, 53192386 + ... + 53772207.

It is an arithmetic number, because the mean of its divisors is an integer number (2648336382846).

Almost surely, 2^{31010212121223} is an apocalyptic number.

31010212121223 is a deficient number, since it is larger than the sum of its proper divisors (11363170004313).

31010212121223 is a wasteful number, since it uses less digits than its factorization.

31010212121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106966994.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31010212121223 its reverse (32212121201013), we get a palindrome (63222333322236).

The spelling of 31010212121223 in words is "thirty-one trillion, ten billion, two hundred twelve million, one hundred twenty-one thousand, two hundred twenty-three".