23471159209 has 9 divisors (see below), whose sum is σ = 24539697399. Its totient is φ = 22447303560.

The previous prime is 23471159189. The next prime is 23471159213. The reversal of 23471159209 is 90295117432.

The square root of 23471159209 is 153203.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 22082851609 + 1388307600 = 148603^2 + 37260^2 .

It is not a de Polignac number, because 23471159209 - 2⁷ = 23471159081 is a prime.

It is a super-2 number, since 2×23471159209² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23471159009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3520339 + ... + 3526999.

Almost surely, 2^23471159209 is an apocalyptic number.

23471159209 is the 153203-rd square number.

23471159209 is the 76602-nd centered octagonal number.

It is an amenable number.

23471159209 is a deficient number, since it is larger than the sum of its proper divisors (1068538190).

23471159209 is an frugal number, since it uses more digits than its factorization.

23471159209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13368 (or 6684 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 23471159209 in words is "twenty-three billion, four hundred seventy-one million, one hundred fifty-nine thousand, two hundred nine".