23003217157 has 16 divisors (see below), whose sum is σ = 24960528432. Its totient is φ = 21113466880.

The previous prime is 23003217151. The next prime is 23003217161. The reversal of 23003217157 is 75171230032.

It can be written as a sum of positive squares in 8 ways, for example, as 1161037476 + 21842179681 = 34074^2 + 147791^2 .

It is not a de Polignac number, because 23003217157 - 2¹⁵ = 23003184389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003217151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2265063 + ... + 2275195.

It is an arithmetic number, because the mean of its divisors is an integer number (1560033027).

Almost surely, 2^23003217157 is an apocalyptic number.

It is an amenable number.

23003217157 is a deficient number, since it is larger than the sum of its proper divisors (1957311275).

23003217157 is a wasteful number, since it uses less digits than its factorization.

23003217157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448.

The product of its (nonzero) digits is 8820, while the sum is 31.

Adding to 23003217157 its reverse (75171230032), we get a palindrome (98174447189).

The spelling of 23003217157 in words is "twenty-three billion, three million, two hundred seventeen thousand, one hundred fifty-seven".