50391530731 has 8 divisors (see below), whose sum is σ = 52063371360. Its totient is φ = 48736001088.

The previous prime is 50391530729. The next prime is 50391530759. The reversal of 50391530731 is 13703519305.

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

It is a cyclic number.

It is not a de Polignac number, because 50391530731 - 2¹ = 50391530729 is a prime.

It is a super-2 number, since 2×50391530731² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50391590731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4071466 + ... + 4083823.

It is an arithmetic number, because the mean of its divisors is an integer number (6507921420).

Almost surely, 2^50391530731 is an apocalyptic number.

50391530731 is a deficient number, since it is larger than the sum of its proper divisors (1671840629).

50391530731 is a wasteful number, since it uses less digits than its factorization.

50391530731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155493.

The product of its (nonzero) digits is 42525, while the sum is 37.

The spelling of 50391530731 in words is "fifty billion, three hundred ninety-one million, five hundred thirty thousand, seven hundred thirty-one".