11123131973 has 2 divisors, whose sum is σ = 11123131974. Its totient is φ = 11123131972.

The previous prime is 11123131969. The next prime is 11123132029. The reversal of 11123131973 is 37913132111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6523308289 + 4599823684 = 80767^2 + 67822^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123131973 - 2² = 11123131969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11123131673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561565986 + 5561565987.

It is an arithmetic number, because the mean of its divisors is an integer number (5561565987).

Almost surely, 2^11123131973 is an apocalyptic number.

It is an amenable number.

11123131973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11123131973 is an equidigital number, since it uses as much as digits as its factorization.

11123131973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 32.

The spelling of 11123131973 in words is "eleven billion, one hundred twenty-three million, one hundred thirty-one thousand, nine hundred seventy-three".