1217002023 has 16 divisors (see below), whose sum is σ = 1865138400. Its totient is φ = 783357120.

The previous prime is 1217002019. The next prime is 1217002037. The reversal of 1217002023 is 3202007121.

It is not a de Polignac number, because 1217002023 - 2² = 1217002019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1217001987 and 1217002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217002043) 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, 776358 + ... + 777923.

It is an arithmetic number, because the mean of its divisors is an integer number (116571150).

Almost surely, 2^1217002023 is an apocalyptic number.

1217002023 is a deficient number, since it is larger than the sum of its proper divisors (648136377).

1217002023 is a wasteful number, since it uses less digits than its factorization.

1217002023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554319 (or 1554313 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1217002023 is about 34885.5560798449. The cubic root of 1217002023 is about 1067.6537588012.

Adding to 1217002023 its reverse (3202007121), we get a palindrome (4419009144).

The spelling of 1217002023 in words is "one billion, two hundred seventeen million, two thousand, twenty-three".