1127431757 has 2 divisors, whose sum is σ = 1127431758. Its totient is φ = 1127431756.

The previous prime is 1127431751. The next prime is 1127431759. The reversal of 1127431757 is 7571347211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1023616036 + 103815721 = 31994^2 + 10189^2 .

It is an emirp because it is prime and its reverse (7571347211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1127431757 - 2¹² = 1127427661 is a prime.

It is a super-2 number, since 2×1127431757² = 2542204733384214098, which contains 22 as substring.

Together with 1127431759, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1127431757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1127431751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563715878 + 563715879.

It is an arithmetic number, because the mean of its divisors is an integer number (563715879).

Almost surely, 2^1127431757 is an apocalyptic number.

It is an amenable number.

1127431757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127431757 is an equidigital number, since it uses as much as digits as its factorization.

1127431757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41160, while the sum is 38.

The square root of 1127431757 is about 33577.2505872652. The cubic root of 1127431757 is about 1040.7907438501.

Adding to 1127431757 its reverse (7571347211), we get a palindrome (8698778968).

The spelling of 1127431757 in words is "one billion, one hundred twenty-seven million, four hundred thirty-one thousand, seven hundred fifty-seven".