2312100013 has 4 divisors (see below), whose sum is σ = 2319487228. Its totient is φ = 2304712800.

The previous prime is 2312099989. The next prime is 2312100061. The reversal of 2312100013 is 3100012132.

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 195916009 + 2116184004 = 13997^2 + 46002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2312100013 is a prime.

It is a super-2 number, since 2×2312100013² = 10691612940229200338, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312099966 and 2312100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312100073) 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, 3693138 + ... + 3693763.

It is an arithmetic number, because the mean of its divisors is an integer number (579871807).

Almost surely, 2^2312100013 is an apocalyptic number.

It is an amenable number.

2312100013 is a deficient number, since it is larger than the sum of its proper divisors (7387215).

2312100013 is an equidigital number, since it uses as much as digits as its factorization.

2312100013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387214.

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

The square root of 2312100013 is about 48084.3011075340. The cubic root of 2312100013 is about 1322.3168701655.

Adding to 2312100013 its reverse (3100012132), we get a palindrome (5412112145).

The spelling of 2312100013 in words is "two billion, three hundred twelve million, one hundred thousand, thirteen".