2120123031003 has 6 divisors (see below), whose sum is σ = 3062399933684. Its totient is φ = 1413415353996.

The previous prime is 2120123030959. The next prime is 2120123031017. The reversal of 2120123031003 is 3001303210212.

2120123031003 is a `hidden beast` number, since 2 + 120 + 1 + 230 + 310 + 0 + 3 = 666.

It is not a de Polignac number, because 2120123031003 - 2¹⁸ = 2120122768859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120123031703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117784612825 + ... + 117784612842.

Almost surely, 2^{2120123031003} is an apocalyptic number.

2120123031003 is a deficient number, since it is larger than the sum of its proper divisors (942276902681).

2120123031003 is a wasteful number, since it uses less digits than its factorization.

2120123031003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235569225673 (or 235569225670 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 2120123031003 its reverse (3001303210212), we get a palindrome (5121426241215).

The spelling of 2120123031003 in words is "two trillion, one hundred twenty billion, one hundred twenty-three million, thirty-one thousand, three".