1123305061 has 8 divisors (see below), whose sum is σ = 1185256800. Its totient is φ = 1061636400.

The previous prime is 1123305041. The next prime is 1123305067. The reversal of 1123305061 is 1605033211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1123305061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123305067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62590 + ... + 78511.

It is an arithmetic number, because the mean of its divisors is an integer number (148157100).

Almost surely, 2^1123305061 is an apocalyptic number.

It is an amenable number.

1123305061 is a deficient number, since it is larger than the sum of its proper divisors (61951739).

1123305061 is a wasteful number, since it uses less digits than its factorization.

1123305061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141539.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1123305061 is about 33515.7434797440. The cubic root of 1123305061 is about 1039.5193356360.

Adding to 1123305061 its reverse (1605033211), we get a palindrome (2728338272).

The spelling of 1123305061 in words is "one billion, one hundred twenty-three million, three hundred five thousand, sixty-one".