5111720231 has 8 divisors (see below), whose sum is σ = 5291003904. Its totient is φ = 4933335960.

The previous prime is 5111720227. The next prime is 5111720239. The reversal of 5111720231 is 1320271115.

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 5111720231 - 2² = 5111720227 is a prime.

It is a super-2 number, since 2×5111720231² = 52259367440029386722, 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 = 5111720197 and 5111720206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111720239) 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, 213275 + ... + 236028.

It is an arithmetic number, because the mean of its divisors is an integer number (661375488).

Almost surely, 2^5111720231 is an apocalyptic number.

5111720231 is a deficient number, since it is larger than the sum of its proper divisors (179283673).

5111720231 is a wasteful number, since it uses less digits than its factorization.

5111720231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449701.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 5111720231 is about 71496.2952256968. The cubic root of 5111720231 is about 1722.6181767205.

Adding to 5111720231 its reverse (1320271115), we get a palindrome (6431991346).

The spelling of 5111720231 in words is "five billion, one hundred eleven million, seven hundred twenty thousand, two hundred thirty-one".