232287421 has 2 divisors, whose sum is σ = 232287422. Its totient is φ = 232287420.

The previous prime is 232287409. The next prime is 232287467. The reversal of 232287421 is 124782232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199911321 + 32376100 = 14139^2 + 5690^2 .

It is a cyclic number.

It is not a de Polignac number, because 232287421 - 2⁵ = 232287389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232288421) 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, 116143710 + 116143711.

It is an arithmetic number, because the mean of its divisors is an integer number (116143711).

Almost surely, 2^232287421 is an apocalyptic number.

It is an amenable number.

232287421 is a deficient number, since it is larger than the sum of its proper divisors (1).

232287421 is an equidigital number, since it uses as much as digits as its factorization.

232287421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 31.

The square root of 232287421 is about 15240.9783478621. The cubic root of 232287421 is about 614.7170099534.

The spelling of 232287421 in words is "two hundred thirty-two million, two hundred eighty-seven thousand, four hundred twenty-one".