16731231205 has 32 divisors (see below), whose sum is σ = 22660968960. Its totient is φ = 11766332160.

The previous prime is 16731231199. The next prime is 16731231227. The reversal of 16731231205 is 50213213761.

It is a happy number.

It is not a de Polignac number, because 16731231205 - 2³ = 16731231197 is a prime.

It is a super-5 number, since 5×16731231205⁵ (a number of 52 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317920 + ... + 366790.

It is an arithmetic number, because the mean of its divisors is an integer number (708155280).

Almost surely, 2^16731231205 is an apocalyptic number.

It is an amenable number.

16731231205 is a deficient number, since it is larger than the sum of its proper divisors (5929737755).

16731231205 is a wasteful number, since it uses less digits than its factorization.

16731231205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49141.

The product of its (nonzero) digits is 7560, while the sum is 31.

Adding to 16731231205 its reverse (50213213761), we get a palindrome (66944444966).

The spelling of 16731231205 in words is "sixteen billion, seven hundred thirty-one million, two hundred thirty-one thousand, two hundred five".