203311311100023 has 8 divisors (see below), whose sum is σ = 309807712152448. Its totient is φ = 116177892057144.

The previous prime is 203311311100003. The next prime is 203311311100031. The reversal of 203311311100023 is 320001113113302.

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 203311311100023 - 2⁹ = 203311311099511 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: 9681491004763 = 203311311100023 / (2 + 0 + 3 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 0 + 0 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203311311100003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4840745502361 + ... + 4840745502402.

It is an arithmetic number, because the mean of its divisors is an integer number (38725964019056).

Almost surely, 2^{203311311100023} is an apocalyptic number.

203311311100023 is a deficient number, since it is larger than the sum of its proper divisors (106496401052425).

203311311100023 is an equidigital number, since it uses as much as digits as its factorization.

203311311100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9681491004773.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 203311311100023 its reverse (320001113113302), we get a palindrome (523312424213325).

The spelling of 203311311100023 in words is "two hundred three trillion, three hundred eleven billion, three hundred eleven million, one hundred thousand, twenty-three".