1243034311 has 16 divisors (see below), whose sum is σ = 1302819840. Its totient is φ = 1184578560.

The previous prime is 1243034297. The next prime is 1243034341. The reversal of 1243034311 is 1134303421.

It is a cyclic number.

It is not a de Polignac number, because 1243034311 - 2¹⁷ = 1242903239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243034341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077511 + ... + 1078663.

It is an arithmetic number, because the mean of its divisors is an integer number (81426240).

Almost surely, 2^1243034311 is an apocalyptic number.

1243034311 is a deficient number, since it is larger than the sum of its proper divisors (59785529).

1243034311 is a wasteful number, since it uses less digits than its factorization.

1243034311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1243034311 is about 35256.6917194453. The cubic root of 1243034311 is about 1075.2126670654.

Adding to 1243034311 its reverse (1134303421), we get a palindrome (2377337732).

The spelling of 1243034311 in words is "one billion, two hundred forty-three million, thirty-four thousand, three hundred eleven".