10203122311 has 4 divisors (see below), whose sum is σ = 10206888624. Its totient is φ = 10199356000.

The previous prime is 10203122291. The next prime is 10203122329. The reversal of 10203122311 is 11322130201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10203122311 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 (10203122351) 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, 1879090 + ... + 1884511.

It is an arithmetic number, because the mean of its divisors is an integer number (2551722156).

Almost surely, 2^10203122311 is an apocalyptic number.

10203122311 is a deficient number, since it is larger than the sum of its proper divisors (3766313).

10203122311 is an equidigital number, since it uses as much as digits as its factorization.

10203122311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3766312.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10203122311 its reverse (11322130201), we get a palindrome (21525252512).

The spelling of 10203122311 in words is "ten billion, two hundred three million, one hundred twenty-two thousand, three hundred eleven".