231406203 has 8 divisors (see below), whose sum is σ = 352619008. Its totient is φ = 132232104.

The previous prime is 231406199. The next prime is 231406211. The reversal of 231406203 is 302604132.

It is a happy number.

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

It is not a de Polignac number, because 231406203 - 2² = 231406199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11019343 = 231406203 / (2 + 3 + 1 + 4 + 0 + 6 + 2 + 0 + 3).

It is a self number, because there is not a number n which added to its sum of digits gives 231406203.

It is not an unprimeable number, because it can be changed into a prime (231406213) by changing a digit.

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, 5509651 + ... + 5509692.

It is an arithmetic number, because the mean of its divisors is an integer number (44077376).

Almost surely, 2^231406203 is an apocalyptic number.

231406203 is a deficient number, since it is larger than the sum of its proper divisors (121212805).

231406203 is a wasteful number, since it uses less digits than its factorization.

231406203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11019353.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 231406203 is about 15212.0413817476. The cubic root of 231406203 is about 613.9386837658.

The spelling of 231406203 in words is "two hundred thirty-one million, four hundred six thousand, two hundred three".