1123988471 has 2 divisors, whose sum is σ = 1123988472. Its totient is φ = 1123988470.

The previous prime is 1123988447. The next prime is 1123988497. The reversal of 1123988471 is 1748893211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123988471 - 2²² = 1119794167 is a prime.

It is a super-3 number, since 3×1123988471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123988071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561994235 + 561994236.

It is an arithmetic number, because the mean of its divisors is an integer number (561994236).

Almost surely, 2^1123988471 is an apocalyptic number.

1123988471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123988471 is an equidigital number, since it uses as much as digits as its factorization.

1123988471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 44.

The square root of 1123988471 is about 33525.9372874197. The cubic root of 1123988471 is about 1039.7301047054.

The spelling of 1123988471 in words is "one billion, one hundred twenty-three million, nine hundred eighty-eight thousand, four hundred seventy-one".