8148731 has 4 divisors (see below), whose sum is σ = 8223600. Its totient is φ = 8073864.

The previous prime is 8148727. The next prime is 8148733. The reversal of 8148731 is 1378418.

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 8148731 - 2² = 8148727 is a prime.

It is a super-2 number, since 2×8148731² = 132803633820722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8148733) 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, 37271 + ... + 37488.

It is an arithmetic number, because the mean of its divisors is an integer number (2055900).

Almost surely, 2^8148731 is an apocalyptic number.

8148731 is a deficient number, since it is larger than the sum of its proper divisors (74869).

8148731 is a wasteful number, since it uses less digits than its factorization.

8148731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74868.

The product of its digits is 5376, while the sum is 32.

The square root of 8148731 is about 2854.5982204156. The cubic root of 8148731 is about 201.2318224905.

It can be divided in two parts, 81487 and 31, that added together give a palindrome (81518).

The spelling of 8148731 in words is "eight million, one hundred forty-eight thousand, seven hundred thirty-one".