123031002011 has 8 divisors (see below), whose sum is σ = 123663697920. Its totient is φ = 122399102248.

The previous prime is 123031001993. The next prime is 123031002037. The reversal of 123031002011 is 110200130321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123031002011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123031302011) 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 7 ways as a sum of consecutive naturals, for example, 112070 + ... + 508548.

It is an arithmetic number, because the mean of its divisors is an integer number (15457962240).

Almost surely, 2^123031002011 is an apocalyptic number.

123031002011 is a deficient number, since it is larger than the sum of its proper divisors (632695909).

123031002011 is a wasteful number, since it uses less digits than its factorization.

123031002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398073.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 123031002011 its reverse (110200130321), we get a palindrome (233231132332).

The spelling of 123031002011 in words is "one hundred twenty-three billion, thirty-one million, two thousand, eleven".