123031202113 has 16 divisors (see below), whose sum is σ = 130346740800. Its totient is φ = 115800192000.

The previous prime is 123031202101. The next prime is 123031202117. The reversal of 123031202113 is 311202130321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123031202113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123031202117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12386133 + ... + 12396061.

It is an arithmetic number, because the mean of its divisors is an integer number (8146671300).

Almost surely, 2^123031202113 is an apocalyptic number.

It is an amenable number.

123031202113 is a deficient number, since it is larger than the sum of its proper divisors (7315538687).

123031202113 is a wasteful number, since it uses less digits than its factorization.

123031202113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14112.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123031202113 its reverse (311202130321), we get a palindrome (434233332434).

The spelling of 123031202113 in words is "one hundred twenty-three billion, thirty-one million, two hundred two thousand, one hundred thirteen".