31113223130023 has 4 divisors (see below), whose sum is σ = 32116875489088. Its totient is φ = 30109570770960.

The previous prime is 31113223129921. The next prime is 31113223130057. The reversal of 31113223130023 is 32003132231113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113223130023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31113223130023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31113223130923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501826179486 + ... + 501826179547.

It is an arithmetic number, because the mean of its divisors is an integer number (8029218872272).

Almost surely, 2^{31113223130023} is an apocalyptic number.

31113223130023 is a deficient number, since it is larger than the sum of its proper divisors (1003652359065).

31113223130023 is a wasteful number, since it uses less digits than its factorization.

31113223130023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003652359064.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31113223130023 its reverse (32003132231113), we get a palindrome (63116355361136).

The spelling of 31113223130023 in words is "thirty-one trillion, one hundred thirteen billion, two hundred twenty-three million, one hundred thirty thousand, twenty-three".