1131312323 has 2 divisors, whose sum is σ = 1131312324. Its totient is φ = 1131312322.

The previous prime is 1131312319. The next prime is 1131312349. The reversal of 1131312323 is 3232131311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131312323 - 2² = 1131312319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131312295 and 1131312304.

It is not a weakly prime, because it can be changed into another prime (1131312023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565656161 + 565656162.

It is an arithmetic number, because the mean of its divisors is an integer number (565656162).

Almost surely, 2^1131312323 is an apocalyptic number.

1131312323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131312323 is an equidigital number, since it uses as much as digits as its factorization.

1131312323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 20.

The square root of 1131312323 is about 33634.9865913456. The cubic root of 1131312323 is about 1041.9834936961.

Adding to 1131312323 its reverse (3232131311), we get a palindrome (4363443634).

The spelling of 1131312323 in words is "one billion, one hundred thirty-one million, three hundred twelve thousand, three hundred twenty-three".