1131123347 has 2 divisors, whose sum is σ = 1131123348. Its totient is φ = 1131123346.

The previous prime is 1131123311. The next prime is 1131123349. The reversal of 1131123347 is 7433211311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131123347 - 2⁶ = 1131123283 is a prime.

It is a super-2 number, since 2×1131123347² = 2558880052256964818, which contains 22 as substring.

Together with 1131123349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1131123349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565561673 + 565561674.

It is an arithmetic number, because the mean of its divisors is an integer number (565561674).

Almost surely, 2^1131123347 is an apocalyptic number.

1131123347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131123347 is an equidigital number, since it uses as much as digits as its factorization.

1131123347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The square root of 1131123347 is about 33632.1772563121. The cubic root of 1131123347 is about 1041.9254723364.

Adding to 1131123347 its reverse (7433211311), we get a palindrome (8564334658).

It can be divided in two parts, 113 and 1123347, that multiplied together give a triangular number (126938211 = T₁₅₉₃₃).

The spelling of 1131123347 in words is "one billion, one hundred thirty-one million, one hundred twenty-three thousand, three hundred forty-seven".