123023203031 has 4 divisors (see below), whose sum is σ = 123106836864. Its totient is φ = 122939569200.

The previous prime is 123023202937. The next prime is 123023203057. The reversal of 123023203031 is 130302320321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123023203031 - 2¹⁰ = 123023202007 is a prime.

It is a super-3 number, since 3×123023203031³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123023202994 and 123023203012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123023203231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41814710 + ... + 41817651.

It is an arithmetic number, because the mean of its divisors is an integer number (30776709216).

Almost surely, 2^123023203031 is an apocalyptic number.

123023203031 is a deficient number, since it is larger than the sum of its proper divisors (83633833).

123023203031 is an equidigital number, since it uses as much as digits as its factorization.

123023203031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83633832.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 123023203031 its reverse (130302320321), we get a palindrome (253325523352).

The spelling of 123023203031 in words is "one hundred twenty-three billion, twenty-three million, two hundred three thousand, thirty-one".