123002002031 has 4 divisors (see below), whose sum is σ = 125619065952. Its totient is φ = 120384938112.

The previous prime is 123002002007. The next prime is 123002002037. The reversal of 123002002031 is 130200200321.

It is a happy number.

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 123002002031 - 2³⁴ = 105822132847 is a prime.

It is a super-2 number, since 2×123002002031² (a number of 23 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 = 123002001997 and 123002002015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123002002037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308531890 + ... + 1308531983.

It is an arithmetic number, because the mean of its divisors is an integer number (31404766488).

Almost surely, 2^123002002031 is an apocalyptic number.

123002002031 is a deficient number, since it is larger than the sum of its proper divisors (2617063921).

123002002031 is an equidigital number, since it uses as much as digits as its factorization.

123002002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617063920.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 123002002031 its reverse (130200200321), we get a palindrome (253202202352).

The spelling of 123002002031 in words is "one hundred twenty-three billion, two million, two thousand, thirty-one".