1113123001 has 8 divisors (see below), whose sum is σ = 1120447944. Its totient is φ = 1105808640.

The previous prime is 1113122977. The next prime is 1113123029. The reversal of 1113123001 is 1003213111.

It can be written as a sum of positive squares in 4 ways, for example, as 258437776 + 854685225 = 16076^2 + 29235^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1113123001 - 2²⁷ = 978905273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113123101) 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, 382785 + ... + 385681.

It is an arithmetic number, because the mean of its divisors is an integer number (140055993).

Almost surely, 2^1113123001 is an apocalyptic number.

It is an amenable number.

1113123001 is a deficient number, since it is larger than the sum of its proper divisors (7324943).

1113123001 is a wasteful number, since it uses less digits than its factorization.

1113123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5291.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1113123001 is about 33363.4980330300. The cubic root of 1113123001 is about 1036.3689326821.

Adding to 1113123001 its reverse (1003213111), we get a palindrome (2116336112).

The spelling of 1113123001 in words is "one billion, one hundred thirteen million, one hundred twenty-three thousand, one".