123200101031 has 4 divisors (see below), whose sum is σ = 140800115472. Its totient is φ = 105600086592.

The previous prime is 123200101019. The next prime is 123200101043. The reversal of 123200101031 is 130101002321.

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

It is an interprime number because it is at equal distance from previous prime (123200101019) and next prime (123200101043).

It is not a de Polignac number, because 123200101031 - 2¹⁰ = 123200100007 is a prime.

It is a super-2 number, since 2×123200101031² (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 = 123200100997 and 123200101015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123200101001) 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, 8800007210 + ... + 8800007223.

It is an arithmetic number, because the mean of its divisors is an integer number (35200028868).

Almost surely, 2^123200101031 is an apocalyptic number.

123200101031 is a deficient number, since it is larger than the sum of its proper divisors (17600014441).

123200101031 is an equidigital number, since it uses as much as digits as its factorization.

123200101031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17600014440.

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

Adding to 123200101031 its reverse (130101002321), we get a palindrome (253301103352).

The spelling of 123200101031 in words is "one hundred twenty-three billion, two hundred million, one hundred one thousand, thirty-one".