231405046 has 16 divisors (see below), whose sum is σ = 354391200. Its totient is φ = 113296960.

The previous prime is 231405029. The next prime is 231405091. The reversal of 231405046 is 640504132.

It is a self number, because there is not a number n which added to its sum of digits gives 231405046.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15690 + ... + 26626.

It is an arithmetic number, because the mean of its divisors is an integer number (22149450).

Almost surely, 2^231405046 is an apocalyptic number.

231405046 is a deficient number, since it is larger than the sum of its proper divisors (122986154).

231405046 is a wasteful number, since it uses less digits than its factorization.

231405046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 231405046 is about 15212.0033526160. The cubic root of 231405046 is about 613.9376605604.

Adding to 231405046 its reverse (640504132), we get a palindrome (871909178).

The spelling of 231405046 in words is "two hundred thirty-one million, four hundred five thousand, forty-six".