203465561423 has 4 divisors (see below), whose sum is σ = 204184521288. Its totient is φ = 202746601560.

The previous prime is 203465561353. The next prime is 203465561461. The reversal of 203465561423 is 324165564302.

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 203465561423 - 2¹² = 203465557327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203465561023) 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, 359479508 + ... + 359480073.

It is an arithmetic number, because the mean of its divisors is an integer number (51046130322).

Almost surely, 2^203465561423 is an apocalyptic number.

203465561423 is a deficient number, since it is larger than the sum of its proper divisors (718959865).

203465561423 is an equidigital number, since it uses as much as digits as its factorization.

203465561423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718959864.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 203465561423 in words is "two hundred three billion, four hundred sixty-five million, five hundred sixty-one thousand, four hundred twenty-three".