31314031123 has 4 divisors (see below), whose sum is σ = 31314456288. Its totient is φ = 31313605960.

The previous prime is 31314031121. The next prime is 31314031129. The reversal of 31314031123 is 32113041313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32113041313 = 139339 ⋅230467.

It is a cyclic number.

It is not a de Polignac number, because 31314031123 - 2¹ = 31314031121 is a prime.

It is a super-2 number, since 2×31314031123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31314031094 and 31314031103.

It is not an unprimeable number, because it can be changed into a prime (31314031121) 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, 70411 + ... + 259972.

It is an arithmetic number, because the mean of its divisors is an integer number (7828614072).

Almost surely, 2^31314031123 is an apocalyptic number.

31314031123 is a deficient number, since it is larger than the sum of its proper divisors (425165).

31314031123 is an equidigital number, since it uses as much as digits as its factorization.

31314031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425164.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31314031123 its reverse (32113041313), we get a palindrome (63427072436).

The spelling of 31314031123 in words is "thirty-one billion, three hundred fourteen million, thirty-one thousand, one hundred twenty-three".