8020747431 has 12 divisors (see below), whose sum is σ = 11640434520. Its totient is φ = 5321821680.

The previous prime is 8020747417. The next prime is 8020747433. The reversal of 8020747431 is 1347470208.

It is a happy number.

It is not a de Polignac number, because 8020747431 - 2¹⁰ = 8020746407 is a prime.

It is a super-2 number, since 2×8020747431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8020747433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2109936 + ... + 2113733.

It is an arithmetic number, because the mean of its divisors is an integer number (970036210).

Almost surely, 2^8020747431 is an apocalyptic number.

8020747431 is a deficient number, since it is larger than the sum of its proper divisors (3619687089).

8020747431 is a wasteful number, since it uses less digits than its factorization.

8020747431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223886 (or 4223883 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 8020747431 is about 89558.6256649799. The cubic root of 8020747431 is about 2001.7274600946.

The spelling of 8020747431 in words is "eight billion, twenty million, seven hundred forty-seven thousand, four hundred thirty-one".