231432541 has 8 divisors (see below), whose sum is σ = 233046968. Its totient is φ = 229824000.

The previous prime is 231432529. The next prime is 231432587. The reversal of 231432541 is 145234132.

It can be written as a sum of positive squares in 4 ways, for example, as 10791225 + 220641316 = 3285^2 + 14854^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231432541 - 2⁹ = 231432029 is a prime.

It is a super-2 number, since 2×231432541² = 107122042067433362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231432041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100321 + ... + 102601.

It is an arithmetic number, because the mean of its divisors is an integer number (29130871).

Almost surely, 2^231432541 is an apocalyptic number.

It is an amenable number.

231432541 is a deficient number, since it is larger than the sum of its proper divisors (1614427).

231432541 is a wasteful number, since it uses less digits than its factorization.

231432541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943.

The product of its digits is 2880, while the sum is 25.

The square root of 231432541 is about 15212.9070528943. The cubic root of 231432541 is about 613.9619751374.

Adding to 231432541 its reverse (145234132), we get a palindrome (376666673).

The spelling of 231432541 in words is "two hundred thirty-one million, four hundred thirty-two thousand, five hundred forty-one".