1232100013 has 4 divisors (see below), whose sum is σ = 1233728380. Its totient is φ = 1230471648.

The previous prime is 1232099993. The next prime is 1232100017. The reversal of 1232100013 is 3100012321.

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 925254724 + 306845289 = 30418^2 + 17517^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232100013 - 2²¹ = 1230002861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232099966 and 1232100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232100017) 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, 813048 + ... + 814561.

It is an arithmetic number, because the mean of its divisors is an integer number (308432095).

Almost surely, 2^1232100013 is an apocalyptic number.

It is an amenable number.

1232100013 is a deficient number, since it is larger than the sum of its proper divisors (1628367).

1232100013 is an equidigital number, since it uses as much as digits as its factorization.

1232100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628366.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1232100013 is about 35101.2822130474. The cubic root of 1232100013 is about 1072.0506900944.

Adding to 1232100013 its reverse (3100012321), we get a palindrome (4332112334).

The spelling of 1232100013 in words is "one billion, two hundred thirty-two million, one hundred thousand, thirteen".