1131542323 has 2 divisors, whose sum is σ = 1131542324. Its totient is φ = 1131542322.

The previous prime is 1131542317. The next prime is 1131542327. The reversal of 1131542323 is 3232451311.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3232451311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131542323 - 2²¹ = 1129445171 is a prime.

It is a super-3 number, since 3×1131542323³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1131542327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565771161 + 565771162.

It is an arithmetic number, because the mean of its divisors is an integer number (565771162).

Almost surely, 2^1131542323 is an apocalyptic number.

1131542323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131542323 is an equidigital number, since it uses as much as digits as its factorization.

1131542323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 1131542323 is about 33638.4054764788. The cubic root of 1131542323 is about 1042.0541019503.

Adding to 1131542323 its reverse (3232451311), we get a palindrome (4363993634).

The spelling of 1131542323 in words is "one billion, one hundred thirty-one million, five hundred forty-two thousand, three hundred twenty-three".