1142311 has 2 divisors, whose sum is σ = 1142312. Its totient is φ = 1142310.

The previous prime is 1142287. The next prime is 1142321. The reversal of 1142311 is 1132411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1142311 - 2⁵ = 1142279 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1142291 and 1142300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571155 + 571156.

It is an arithmetic number, because the mean of its divisors is an integer number (571156).

2^1142311 is an apocalyptic number.

1142311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142311 is an equidigital number, since it uses as much as digits as its factorization.

1142311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 13.

The square root of 1142311 is about 1068.7895021940. The cubic root of 1142311 is about 104.5349348641.

Adding to 1142311 its reverse (1132411), we get a palindrome (2274722).

The spelling of 1142311 in words is "one million, one hundred forty-two thousand, three hundred eleven".