208040040323 has 4 divisors (see below), whose sum is σ = 210970181808. Its totient is φ = 205109898840.

The previous prime is 208040040319. The next prime is 208040040331. The reversal of 208040040323 is 323040040802.

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 208040040323 - 2² = 208040040319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208040040292 and 208040040301.

It is not an unprimeable number, because it can be changed into a prime (208040040353) 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, 1465070636 + ... + 1465070777.

It is an arithmetic number, because the mean of its divisors is an integer number (52742545452).

Almost surely, 2^208040040323 is an apocalyptic number.

208040040323 is a deficient number, since it is larger than the sum of its proper divisors (2930141485).

208040040323 is an equidigital number, since it uses as much as digits as its factorization.

208040040323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930141484.

The product of its (nonzero) digits is 4608, while the sum is 26.

The spelling of 208040040323 in words is "two hundred eight billion, forty million, forty thousand, three hundred twenty-three".