1123250131 has 2 divisors, whose sum is σ = 1123250132. Its totient is φ = 1123250130.

The previous prime is 1123250081. The next prime is 1123250143. The reversal of 1123250131 is 1310523211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123250131 - 2²¹ = 1121152979 is a prime.

It is a super-2 number, since 2×1123250131² = 2523381713583034322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123250099 and 1123250108.

It is not a weakly prime, because it can be changed into another prime (1123250431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561625065 + 561625066.

It is an arithmetic number, because the mean of its divisors is an integer number (561625066).

Almost surely, 2^1123250131 is an apocalyptic number.

1123250131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123250131 is an equidigital number, since it uses as much as digits as its factorization.

1123250131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1123250131 is about 33514.9240040911. The cubic root of 1123250131 is about 1039.5023910767.

Adding to 1123250131 its reverse (1310523211), we get a palindrome (2433773342).

The spelling of 1123250131 in words is "one billion, one hundred twenty-three million, two hundred fifty thousand, one hundred thirty-one".