1211045423 has 32 divisors (see below), whose sum is σ = 1456358400. Its totient is φ = 985227264.

The previous prime is 1211045417. The next prime is 1211045441. The reversal of 1211045423 is 3245401121.

It is not a de Polignac number, because 1211045423 - 2¹⁰ = 1211044399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211045023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4712111 + ... + 4712367.

It is an arithmetic number, because the mean of its divisors is an integer number (45511200).

Almost surely, 2^1211045423 is an apocalyptic number.

1211045423 is a deficient number, since it is larger than the sum of its proper divisors (245312977).

1211045423 is a wasteful number, since it uses less digits than its factorization.

1211045423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1211045423 is about 34800.0779165794. The cubic root of 1211045423 is about 1065.9090368803.

Adding to 1211045423 its reverse (3245401121), we get a palindrome (4456446544).

The spelling of 1211045423 in words is "one billion, two hundred eleven million, forty-five thousand, four hundred twenty-three".