31301110123 has 4 divisors (see below), whose sum is σ = 31475976840. Its totient is φ = 31126243408.

The previous prime is 31301110117. The next prime is 31301110193. The reversal of 31301110123 is 32101110313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32101110313 = 68897 ⋅465929.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31301110123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301110097 and 31301110106.

It is not an unprimeable number, because it can be changed into a prime (31301110193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87433090 + ... + 87433447.

It is an arithmetic number, because the mean of its divisors is an integer number (7868994210).

Almost surely, 2^31301110123 is an apocalyptic number.

31301110123 is a deficient number, since it is larger than the sum of its proper divisors (174866717).

31301110123 is a wasteful number, since it uses less digits than its factorization.

31301110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174866716.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31301110123 its reverse (32101110313), we get a palindrome (63402220436).

The spelling of 31301110123 in words is "thirty-one billion, three hundred one million, one hundred ten thousand, one hundred twenty-three".