1263236023 has 18 divisors (see below), whose sum is σ = 1491998256. Its totient is φ = 1066427208.

The previous prime is 1263236021. The next prime is 1263236057. The reversal of 1263236023 is 3206323621.

It is not a de Polignac number, because 1263236023 - 2¹ = 1263236021 is a prime.

It is a super-3 number, since 3×1263236023³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1263235982 and 1263236000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263236021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 217090 + ... + 222832.

It is an arithmetic number, because the mean of its divisors is an integer number (82888792).

Almost surely, 2^1263236023 is an apocalyptic number.

1263236023 is a deficient number, since it is larger than the sum of its proper divisors (228762233).

1263236023 is an frugal number, since it uses more digits than its factorization.

1263236023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891 (or 5817 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 1263236023 is about 35542.0317792892. The cubic root of 1263236023 is about 1081.0061562546.

Adding to 1263236023 its reverse (3206323621), we get a palindrome (4469559644).

The spelling of 1263236023 in words is "one billion, two hundred sixty-three million, two hundred thirty-six thousand, twenty-three".