5431127940 has 144 divisors (see below), whose sum is σ = 18851833728. Its totient is φ = 1239823872.

The previous prime is 5431127939. The next prime is 5431127953. The reversal of 5431127940 is 497211345.

5431127940 is a `hidden beast` number, since 543 + 1 + 1 + 2 + 79 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5431127895 and 5431127904.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1198519 + ... + 1203041.

It is an arithmetic number, because the mean of its divisors is an integer number (130915512).

Almost surely, 2^5431127940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5431127940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9425916864).

5431127940 is an abundant number, since it is smaller than the sum of its proper divisors (13420705788).

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

5431127940 is a wasteful number, since it uses less digits than its factorization.

5431127940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498 (or 5493 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 5431127940 is about 73696.1867398850. The cubic root of 5431127940 is about 1757.7752472366.

The spelling of 5431127940 in words is "five billion, four hundred thirty-one million, one hundred twenty-seven thousand, nine hundred forty".