203023211123 has 2 divisors, whose sum is σ = 203023211124. Its totient is φ = 203023211122.

The previous prime is 203023211119. The next prime is 203023211147. The reversal of 203023211123 is 321112320302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203023211123 - 2² = 203023211119 is a prime.

It is a super-2 number, since 2×203023211123² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 203023211095 and 203023211104.

It is not a weakly prime, because it can be changed into another prime (203023211023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101511605561 + 101511605562.

It is an arithmetic number, because the mean of its divisors is an integer number (101511605562).

Almost surely, 2^203023211123 is an apocalyptic number.

203023211123 is a deficient number, since it is larger than the sum of its proper divisors (1).

203023211123 is an equidigital number, since it uses as much as digits as its factorization.

203023211123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203023211123 its reverse (321112320302), we get a palindrome (524135531425).

The spelling of 203023211123 in words is "two hundred three billion, twenty-three million, two hundred eleven thousand, one hundred twenty-three".