1123132085731 has 2 divisors, whose sum is σ = 1123132085732. Its totient is φ = 1123132085730.

The previous prime is 1123132085729. The next prime is 1123132085759. The reversal of 1123132085731 is 1375802313211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123132085731 - 2¹ = 1123132085729 is a prime.

It is a super-2 number, since 2×1123132085731² (a number of 25 digits) contains 22 as substring.

Together with 1123132085729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1123132085771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561566042865 + 561566042866.

It is an arithmetic number, because the mean of its divisors is an integer number (561566042866).

Almost surely, 2^{1123132085731} is an apocalyptic number.

1123132085731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123132085731 is an equidigital number, since it uses as much as digits as its factorization.

1123132085731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 1123132085731 its reverse (1375802313211), we get a palindrome (2498934398942).

The spelling of 1123132085731 in words is "one trillion, one hundred twenty-three billion, one hundred thirty-two million, eighty-five thousand, seven hundred thirty-one".