1211303023 has 16 divisors (see below), whose sum is σ = 1479492864. Its totient is φ = 968042880.

The previous prime is 1211303011. The next prime is 1211303033. The reversal of 1211303023 is 3203031121.

It is a de Polignac number, because none of the positive numbers 2^k-1211303023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1211302988 and 1211303006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211303033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34833 + ... + 60298.

It is an arithmetic number, because the mean of its divisors is an integer number (92468304).

Almost surely, 2^1211303023 is an apocalyptic number.

1211303023 is a deficient number, since it is larger than the sum of its proper divisors (268189841).

1211303023 is a wasteful number, since it uses less digits than its factorization.

1211303023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95262.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1211303023 is about 34803.7788609226. The cubic root of 1211303023 is about 1065.9846075943.

Adding to 1211303023 its reverse (3203031121), we get a palindrome (4414334144).

The spelling of 1211303023 in words is "one billion, two hundred eleven million, three hundred three thousand, twenty-three".