8231157 has 48 divisors (see below), whose sum is σ = 13927680. Its totient is φ = 4636800.

The previous prime is 8231147. The next prime is 8231159. The reversal of 8231157 is 7511328.

It is not a de Polignac number, because 8231157 - 2¹⁵ = 8198389 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8231157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8231159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134907 + ... + 134967.

It is an arithmetic number, because the mean of its divisors is an integer number (290160).

Almost surely, 2^8231157 is an apocalyptic number.

8231157 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

8231157 is a deficient number, since it is larger than the sum of its proper divisors (5696523).

8231157 is a wasteful number, since it uses less digits than its factorization.

8231157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 151 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 8231157 is about 2868.9993028929. Note that the first 3 decimals coincide. The cubic root of 8231157 is about 201.9080472246.

The spelling of 8231157 in words is "eight million, two hundred thirty-one thousand, one hundred fifty-seven".