331632461 has 2 divisors, whose sum is σ = 331632462. Its totient is φ = 331632460.

The previous prime is 331632449. The next prime is 331632467. The reversal of 331632461 is 164236133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277888900 + 53743561 = 16670^2 + 7331^2 .

It is a cyclic number.

It is not a de Polignac number, because 331632461 - 2⁶ = 331632397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331632467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165816230 + 165816231.

It is an arithmetic number, because the mean of its divisors is an integer number (165816231).

Almost surely, 2^331632461 is an apocalyptic number.

It is an amenable number.

331632461 is a deficient number, since it is larger than the sum of its proper divisors (1).

331632461 is an equidigital number, since it uses as much as digits as its factorization.

331632461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 29.

The square root of 331632461 is about 18210.7787038336. The cubic root of 331632461 is about 692.1799437654.

Adding to 331632461 its reverse (164236133), we get a palindrome (495868594).

The spelling of 331632461 in words is "three hundred thirty-one million, six hundred thirty-two thousand, four hundred sixty-one".