235131541 has 2 divisors, whose sum is σ = 235131542. Its totient is φ = 235131540.

The previous prime is 235131499. The next prime is 235131569. The reversal of 235131541 is 145131532.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194490916 + 40640625 = 13946^2 + 6375^2 .

It is a cyclic number.

It is not a de Polignac number, because 235131541 - 2¹³ = 235123349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235131241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117565770 + 117565771.

It is an arithmetic number, because the mean of its divisors is an integer number (117565771).

Almost surely, 2^235131541 is an apocalyptic number.

It is an amenable number.

235131541 is a deficient number, since it is larger than the sum of its proper divisors (1).

235131541 is an equidigital number, since it uses as much as digits as its factorization.

235131541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 235131541 is about 15333.9995108908. Note that the first 3 decimals coincide. The cubic root of 235131541 is about 617.2156982654.

Subtracting from 235131541 its reverse (145131532), we obtain a palindrome (90000009).

The spelling of 235131541 in words is "two hundred thirty-five million, one hundred thirty-one thousand, five hundred forty-one".