1211310023 has 16 divisors (see below), whose sum is σ = 1521241344. Its totient is φ = 936980160.

The previous prime is 1211310011. The next prime is 1211310031. The reversal of 1211310023 is 3200131121.

It is a cyclic number.

It is not a de Polignac number, because 1211310023 - 2⁴ = 1211310007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211310053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46865 + ... + 67962.

It is an arithmetic number, because the mean of its divisors is an integer number (95077584).

Almost surely, 2^1211310023 is an apocalyptic number.

1211310023 is a deficient number, since it is larger than the sum of its proper divisors (309931321).

1211310023 is a wasteful number, since it uses less digits than its factorization.

1211310023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114982.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211310023 is about 34803.8794245699. The cubic root of 1211310023 is about 1065.9866609968.

Adding to 1211310023 its reverse (3200131121), we get a palindrome (4411441144).

The spelling of 1211310023 in words is "one billion, two hundred eleven million, three hundred ten thousand, twenty-three".