123131003201 has 4 divisors (see below), whose sum is σ = 123140006532. Its totient is φ = 123121999872.

The previous prime is 123131003197. The next prime is 123131003207. The reversal of 123131003201 is 102300131321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20506240000 + 102624763201 = 143200^2 + 320351^2 .

It is a cyclic number.

It is not a de Polignac number, because 123131003201 - 2² = 123131003197 is a prime.

It is a super-2 number, since 2×123131003201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123131003201.

It is not an unprimeable number, because it can be changed into a prime (123131003207) 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, 4481120 + ... + 4508513.

It is an arithmetic number, because the mean of its divisors is an integer number (30785001633).

Almost surely, 2^123131003201 is an apocalyptic number.

It is an amenable number.

123131003201 is a deficient number, since it is larger than the sum of its proper divisors (9003331).

123131003201 is an equidigital number, since it uses as much as digits as its factorization.

123131003201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9003330.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123131003201 its reverse (102300131321), we get a palindrome (225431134522).

The spelling of 123131003201 in words is "one hundred twenty-three billion, one hundred thirty-one million, three thousand, two hundred one".