5111231543 has 48 divisors (see below), whose sum is σ = 6118374528. Its totient is φ = 4250188800.

The previous prime is 5111231539. The next prime is 5111231561. The reversal of 5111231543 is 3451321115.

It is not a de Polignac number, because 5111231543 - 2² = 5111231539 is a prime.

It is a super-2 number, since 2×5111231543² = 52249375772316321698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111231563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18860498 + ... + 18860768.

It is an arithmetic number, because the mean of its divisors is an integer number (127466136).

Almost surely, 2^5111231543 is an apocalyptic number.

5111231543 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

5111231543 is a deficient number, since it is larger than the sum of its proper divisors (1007142985).

5111231543 is a wasteful number, since it uses less digits than its factorization.

5111231543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 525 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 5111231543 is about 71492.8775683284. The cubic root of 5111231543 is about 1722.5632800242.

Adding to 5111231543 its reverse (3451321115), we get a palindrome (8562552658).

The spelling of 5111231543 in words is "five billion, one hundred eleven million, two hundred thirty-one thousand, five hundred forty-three".