231946403 has 4 divisors (see below), whose sum is σ = 249788448. Its totient is φ = 214104360.

The previous prime is 231946397. The next prime is 231946411. The reversal of 231946403 is 304649132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231946403 - 2¹⁴ = 231930019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231946403.

It is not an unprimeable number, because it can be changed into a prime (231946423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8921003 + ... + 8921028.

It is an arithmetic number, because the mean of its divisors is an integer number (62447112).

Almost surely, 2^231946403 is an apocalyptic number.

231946403 is a deficient number, since it is larger than the sum of its proper divisors (17842045).

231946403 is a wasteful number, since it uses less digits than its factorization.

231946403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17842044.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 231946403 is about 15229.7867023803. The cubic root of 231946403 is about 614.4160433995.

The spelling of 231946403 in words is "two hundred thirty-one million, nine hundred forty-six thousand, four hundred three".