11321323157 has 2 divisors, whose sum is σ = 11321323158. Its totient is φ = 11321323156.

The previous prime is 11321323151. The next prime is 11321323201. The reversal of 11321323157 is 75132312311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11043067396 + 278255761 = 105086^2 + 16681^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321323157 - 2¹⁶ = 11321257621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11321323151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660661578 + 5660661579.

It is an arithmetic number, because the mean of its divisors is an integer number (5660661579).

Almost surely, 2^11321323157 is an apocalyptic number.

It is an amenable number.

11321323157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321323157 is an equidigital number, since it uses as much as digits as its factorization.

11321323157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

Adding to 11321323157 its reverse (75132312311), we get a palindrome (86453635468).

The spelling of 11321323157 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-three thousand, one hundred fifty-seven".