31003331020123 has 48 divisors (see below), whose sum is σ = 41464800771840. Its totient is φ = 22859127547200.

The previous prime is 31003331020121. The next prime is 31003331020157. The reversal of 31003331020123 is 32102013330013.

It is not a de Polignac number, because 31003331020123 - 2¹ = 31003331020121 is a prime.

It is a super-2 number, since 2×31003331020123² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003331020094 and 31003331020103.

It is not an unprimeable number, because it can be changed into a prime (31003331020121) 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 47 ways as a sum of consecutive naturals, for example, 6589113 + ... + 10267573.

It is an arithmetic number, because the mean of its divisors is an integer number (863850016080).

Almost surely, 2^{31003331020123} is an apocalyptic number.

31003331020123 is a deficient number, since it is larger than the sum of its proper divisors (10461469751717).

31003331020123 is a wasteful number, since it uses less digits than its factorization.

31003331020123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679328 (or 3679321 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31003331020123 its reverse (32102013330013), we get a palindrome (63105344350136).

The spelling of 31003331020123 in words is "thirty-one trillion, three billion, three hundred thirty-one million, twenty thousand, one hundred twenty-three".