5111125231 has 4 divisors (see below), whose sum is σ = 5235786864. Its totient is φ = 4986463600.

The previous prime is 5111125223. The next prime is 5111125237. The reversal of 5111125231 is 1325211115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5111125231 - 2³ = 5111125223 is a prime.

It is a super-2 number, since 2×5111125231² = 52247202253929606722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111125237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62330755 + ... + 62330836.

It is an arithmetic number, because the mean of its divisors is an integer number (1308946716).

Almost surely, 2^5111125231 is an apocalyptic number.

5111125231 is a deficient number, since it is larger than the sum of its proper divisors (124661633).

5111125231 is a wasteful number, since it uses less digits than its factorization.

5111125231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124661632.

The product of its digits is 300, while the sum is 22.

The square root of 5111125231 is about 71492.1340498380. The cubic root of 5111125231 is about 1722.5513370176.

Adding to 5111125231 its reverse (1325211115), we get a palindrome (6436336346).

The spelling of 5111125231 in words is "five billion, one hundred eleven million, one hundred twenty-five thousand, two hundred thirty-one".