231881963 has 8 divisors (see below), whose sum is σ = 233653440. Its totient is φ = 230117760.

The previous prime is 231881959. The next prime is 231881983. The reversal of 231881963 is 369188132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231881963 - 2² = 231881959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231881963.

It is not an unprimeable number, because it can be changed into a prime (231881933) 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 in 7 ways as a sum of consecutive naturals, for example, 73523 + ... + 76611.

It is an arithmetic number, because the mean of its divisors is an integer number (29206680).

Almost surely, 2^231881963 is an apocalyptic number.

231881963 is a deficient number, since it is larger than the sum of its proper divisors (1771477).

231881963 is a wasteful number, since it uses less digits than its factorization.

231881963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3637.

The product of its digits is 62208, while the sum is 41.

The square root of 231881963 is about 15227.6709643990. The cubic root of 231881963 is about 614.3591385334.

The spelling of 231881963 in words is "two hundred thirty-one million, eight hundred eighty-one thousand, nine hundred sixty-three".