1124309981 has 2 divisors, whose sum is σ = 1124309982. Its totient is φ = 1124309980.

The previous prime is 1124309957. The next prime is 1124310007. The reversal of 1124309981 is 1899034211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672364900 + 451945081 = 25930^2 + 21259^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124309981 - 2²² = 1120115677 is a prime.

It is a super-2 number, since 2×1124309981² = 2528145866752440722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1124399981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562154990 + 562154991.

It is an arithmetic number, because the mean of its divisors is an integer number (562154991).

Almost surely, 2^1124309981 is an apocalyptic number.

It is an amenable number.

1124309981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124309981 is an equidigital number, since it uses as much as digits as its factorization.

1124309981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1124309981 is about 33530.7318888210. The cubic root of 1124309981 is about 1039.8292313917.

The spelling of 1124309981 in words is "one billion, one hundred twenty-four million, three hundred nine thousand, nine hundred eighty-one".