1230100013 has 4 divisors (see below), whose sum is σ = 1230273408. Its totient is φ = 1229926620.

The previous prime is 1230099979. The next prime is 1230100021. The reversal of 1230100013 is 3100010321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1230100013 - 2²⁶ = 1162991149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1230099967 and 1230100003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230100043) 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, 75581 + ... + 90402.

It is an arithmetic number, because the mean of its divisors is an integer number (307568352).

Almost surely, 2^1230100013 is an apocalyptic number.

It is an amenable number.

1230100013 is a deficient number, since it is larger than the sum of its proper divisors (173395).

1230100013 is an equidigital number, since it uses as much as digits as its factorization.

1230100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173394.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1230100013 is about 35072.7816547248. The cubic root of 1230100013 is about 1071.4703090272.

Adding to 1230100013 its reverse (3100010321), we get a palindrome (4330110334).

The spelling of 1230100013 in words is "one billion, two hundred thirty million, one hundred thousand, thirteen".