31313523240123 has 8 divisors (see below), whose sum is σ = 41751485837136. Its totient is φ = 20875621401600.

The previous prime is 31313523240107. The next prime is 31313523240191. The reversal of 31313523240123 is 32104232531313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31313523240123 - 2⁴ = 31313523240107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31313523240823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13973158 + ... + 16058523.

It is an arithmetic number, because the mean of its divisors is an integer number (5218935729642).

Almost surely, 2^{31313523240123} is an apocalyptic number.

31313523240123 is a deficient number, since it is larger than the sum of its proper divisors (10437962597013).

31313523240123 is a wasteful number, since it uses less digits than its factorization.

31313523240123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30379245.

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 31313523240123 its reverse (32104232531313), we get a palindrome (63417755771436).

The spelling of 31313523240123 in words is "thirty-one trillion, three hundred thirteen billion, five hundred twenty-three million, two hundred forty thousand, one hundred twenty-three".