8251473731 has 4 divisors (see below), whose sum is σ = 8262640200. Its totient is φ = 8240307264.

The previous prime is 8251473689. The next prime is 8251473743. The reversal of 8251473731 is 1373741528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8251473731 - 2¹⁸ = 8251211587 is a prime.

It is a super-2 number, since 2×8251473731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8251473331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5582126 + ... + 5583603.

It is an arithmetic number, because the mean of its divisors is an integer number (2065660050).

Almost surely, 2^8251473731 is an apocalyptic number.

8251473731 is a deficient number, since it is larger than the sum of its proper divisors (11166469).

8251473731 is a wasteful number, since it uses less digits than its factorization.

8251473731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166468.

The product of its digits is 141120, while the sum is 41.

The square root of 8251473731 is about 90837.6228828122. The cubic root of 8251473731 is about 2020.7403203334.

The spelling of 8251473731 in words is "eight billion, two hundred fifty-one million, four hundred seventy-three thousand, seven hundred thirty-one".