5387072731 has 8 divisors (see below), whose sum is σ = 5441203040. Its totient is φ = 5332977792.

The previous prime is 5387072707. The next prime is 5387072767. The reversal of 5387072731 is 1372707835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5387072731 is a prime.

It is a super-3 number, since 3×5387072731³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5387072701) 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, 383785 + ... + 397573.

It is an arithmetic number, because the mean of its divisors is an integer number (680150380).

Almost surely, 2^5387072731 is an apocalyptic number.

5387072731 is a deficient number, since it is larger than the sum of its proper divisors (54130309).

5387072731 is a wasteful number, since it uses less digits than its factorization.

5387072731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17685.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 5387072731 is about 73396.6806538279. The cubic root of 5387072731 is about 1753.0095404343.

The spelling of 5387072731 in words is "five billion, three hundred eighty-seven million, seventy-two thousand, seven hundred thirty-one".