531363994 has 32 divisors (see below), whose sum is σ = 989798400. Its totient is φ = 208779120.

The previous prime is 531363979. The next prime is 531364003. The reversal of 531363994 is 499363135.

It is a self number, because there is not a number n which added to its sum of digits gives 531363994.

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 15 ways as a sum of consecutive naturals, for example, 23974 + ... + 40465.

It is an arithmetic number, because the mean of its divisors is an integer number (30931200).

Almost surely, 2^531363994 is an apocalyptic number.

531363994 is a deficient number, since it is larger than the sum of its proper divisors (458434406).

531363994 is a wasteful number, since it uses less digits than its factorization.

531363994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64498.

The product of its digits is 262440, while the sum is 43.

The square root of 531363994 is about 23051.3338876517. Note that the first 3 decimals coincide. The cubic root of 531363994 is about 809.9608750090.

The spelling of 531363994 in words is "five hundred thirty-one million, three hundred sixty-three thousand, nine hundred ninety-four".