232561837 has 2 divisors, whose sum is σ = 232561838. Its totient is φ = 232561836.

The previous prime is 232561831. The next prime is 232561841. The reversal of 232561837 is 738165232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197290116 + 35271721 = 14046^2 + 5939^2 .

It is a cyclic number.

It is not a de Polignac number, because 232561837 - 2⁷ = 232561709 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 232561796 and 232561805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232561831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116280918 + 116280919.

It is an arithmetic number, because the mean of its divisors is an integer number (116280919).

Almost surely, 2^232561837 is an apocalyptic number.

It is an amenable number.

232561837 is a deficient number, since it is larger than the sum of its proper divisors (1).

232561837 is an equidigital number, since it uses as much as digits as its factorization.

232561837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 232561837 is about 15249.9782622796. The cubic root of 232561837 is about 614.9589828771.

The spelling of 232561837 in words is "two hundred thirty-two million, five hundred sixty-one thousand, eight hundred thirty-seven".