5131115400 has 96 divisors (see below), whose sum is σ = 15921793440. Its totient is φ = 1366978560.

The previous prime is 5131115393. The next prime is 5131115411. The reversal of 5131115400 is 45111315.

It is a happy number.

It is a super-3 number, since 3×5131115400³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726687 + ... + 733713.

It is an arithmetic number, because the mean of its divisors is an integer number (165852015).

Almost surely, 2^5131115400 is an apocalyptic number.

5131115400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5131115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7960896720).

5131115400 is an abundant number, since it is smaller than the sum of its proper divisors (10790678040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5131115400 is a wasteful number, since it uses less digits than its factorization.

5131115400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8263 (or 8254 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 5131115400 is about 71631.8043888328. The cubic root of 5131115400 is about 1724.7941111127.

Adding to 5131115400 its reverse (45111315), we get a palindrome (5176226715).

The spelling of 5131115400 in words is "five billion, one hundred thirty-one million, one hundred fifteen thousand, four hundred".