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231541 = 2310067
BaseRepresentation
bin111000100001110101
3102202121121
4320201311
524402131
64543541
71653022
oct704165
9382547
10231541
11148a62
12b1bb1
138150b
1460549
1548911
hex38875

231541 has 4 divisors (see below), whose sum is σ = 241632. Its totient is φ = 221452.

The previous prime is 231533. The next prime is 231547. The reversal of 231541 is 145132.

231541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231541 - 23 = 231533 is a prime.

It is a super-2 number, since 2×2315412 = 107222469362, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 231541 parts by 680 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231547) 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, 5011 + ... + 5056.

It is an arithmetic number, because the mean of its divisors is an integer number (60408).

2231541 is an apocalyptic number.

It is an amenable number.

231541 is a deficient number, since it is larger than the sum of its proper divisors (10091).

231541 is a wasteful number, since it uses less digits than its factorization.

231541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10090.

The product of its digits is 120, while the sum is 16.

The square root of 231541 is about 481.1870738081. The cubic root of 231541 is about 61.4057869607.

Adding to 231541 its reverse (145132), we get a palindrome (376673).

The spelling of 231541 in words is "two hundred thirty-one thousand, five hundred forty-one".

Divisors: 1 23 10067 231541