5123216311 has 8 divisors (see below), whose sum is σ = 5184145904. Its totient is φ = 5062452480.

The previous prime is 5123216303. The next prime is 5123216317. The reversal of 5123216311 is 1136123215.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5123216311 - 2³ = 5123216303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123216317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21301 + ... + 103441.

It is an arithmetic number, because the mean of its divisors is an integer number (648018238).

Almost surely, 2^5123216311 is an apocalyptic number.

5123216311 is a deficient number, since it is larger than the sum of its proper divisors (60929593).

5123216311 is an equidigital number, since it uses as much as digits as its factorization.

5123216311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82881.

The product of its digits is 1080, while the sum is 25.

The square root of 5123216311 is about 71576.6464078892. The cubic root of 5123216311 is about 1723.9085791885.

Adding to 5123216311 its reverse (1136123215), we get a palindrome (6259339526).

The spelling of 5123216311 in words is "five billion, one hundred twenty-three million, two hundred sixteen thousand, three hundred eleven".