16731231203 has 4 divisors (see below), whose sum is σ = 17308170240. Its totient is φ = 16154292168.

The previous prime is 16731231199. The next prime is 16731231227. The reversal of 16731231203 is 30213213761.

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 16731231203 - 2² = 16731231199 is a prime.

It is a super-5 number, since 5×16731231203⁵ (a number of 52 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 576939007 = 16731231203 / (1 + 6 + 7 + 3 + 1 + 2 + 3 + 1 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16731231403) 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, 288469475 + ... + 288469532.

It is an arithmetic number, because the mean of its divisors is an integer number (4327042560).

Almost surely, 2^16731231203 is an apocalyptic number.

16731231203 is a deficient number, since it is larger than the sum of its proper divisors (576939037).

16731231203 is an equidigital number, since it uses as much as digits as its factorization.

16731231203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576939036.

The product of its (nonzero) digits is 4536, while the sum is 29.

Adding to 16731231203 its reverse (30213213761), we get a palindrome (46944444964).

The spelling of 16731231203 in words is "sixteen billion, seven hundred thirty-one million, two hundred thirty-one thousand, two hundred three".