31123323113 has 8 divisors (see below), whose sum is σ = 31163330016. Its totient is φ = 31083344800.

The previous prime is 31123323031. The next prime is 31123323157. The reversal of 31123323113 is 31132332113.

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 31123323113 - 2²² = 31119128809 is a prime.

It is a super-2 number, since 2×31123323113² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31123323713) 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 7 ways as a sum of consecutive naturals, for example, 2854370 + ... + 2865252.

It is an arithmetic number, because the mean of its divisors is an integer number (3895416252).

Almost surely, 2^31123323113 is an apocalyptic number.

It is an amenable number.

31123323113 is a deficient number, since it is larger than the sum of its proper divisors (40006903).

31123323113 is a wasteful number, since it uses less digits than its factorization.

31123323113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14295.

The product of its digits is 972, while the sum is 23.

Adding to 31123323113 its reverse (31132332113), we get a palindrome (62255655226).

The spelling of 31123323113 in words is "thirty-one billion, one hundred twenty-three million, three hundred twenty-three thousand, one hundred thirteen".