31000120021223 has 8 divisors (see below), whose sum is σ = 31311964569600. Its totient is φ = 30688484559768.

The previous prime is 31000120021217. The next prime is 31000120021271. The reversal of 31000120021223 is 32212002100013.

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 31000120021223 - 2⁶ = 31000120021159 is a prime.

It is a super-2 number, since 2×31000120021223² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31000120021523) 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, 51973703 + ... + 52566776.

It is an arithmetic number, because the mean of its divisors is an integer number (3913995571200).

Almost surely, 2^{31000120021223} is an apocalyptic number.

31000120021223 is a deficient number, since it is larger than the sum of its proper divisors (311844548377).

31000120021223 is a wasteful number, since it uses less digits than its factorization.

31000120021223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104543461.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31000120021223 its reverse (32212002100013), we get a palindrome (63212122121236).

The spelling of 31000120021223 in words is "thirty-one trillion, one hundred twenty million, twenty-one thousand, two hundred twenty-three".