231244251541 has 4 divisors (see below), whose sum is σ = 231245698284. Its totient is φ = 231242804800.

The previous prime is 231244251449. The next prime is 231244251547. The reversal of 231244251541 is 145152442132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4920461316 + 226323790225 = 70146^2 + 475735^2 .

It is a cyclic number.

It is not a de Polignac number, because 231244251541 - 2²¹ = 231242154389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231244251497 and 231244251506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231244251547) 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, 448900 + ... + 814861.

It is an arithmetic number, because the mean of its divisors is an integer number (57811424571).

Almost surely, 2^231244251541 is an apocalyptic number.

It is an amenable number.

231244251541 is a deficient number, since it is larger than the sum of its proper divisors (1446743).

231244251541 is a wasteful number, since it uses less digits than its factorization.

231244251541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446742.

The product of its digits is 38400, while the sum is 34.

Adding to 231244251541 its reverse (145152442132), we get a palindrome (376396693673).

The spelling of 231244251541 in words is "two hundred thirty-one billion, two hundred forty-four million, two hundred fifty-one thousand, five hundred forty-one".