1123851031 has 2 divisors, whose sum is σ = 1123851032. Its totient is φ = 1123851030.

The previous prime is 1123851019. The next prime is 1123851073. The reversal of 1123851031 is 1301583211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123851031 - 2⁵ = 1123850999 is a prime.

It is a super-2 number, since 2×1123851031² = 2526082279759525922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123850987 and 1123851005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123851031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561925515 + 561925516.

It is an arithmetic number, because the mean of its divisors is an integer number (561925516).

Almost surely, 2^1123851031 is an apocalyptic number.

1123851031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123851031 is an equidigital number, since it uses as much as digits as its factorization.

1123851031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1123851031 is about 33523.8874684903. The cubic root of 1123851031 is about 1039.6877239829.

The spelling of 1123851031 in words is "one billion, one hundred twenty-three million, eight hundred fifty-one thousand, thirty-one".