23203143409 has 4 divisors (see below), whose sum is σ = 23208593140. Its totient is φ = 23197693680.

The previous prime is 23203143401. The next prime is 23203143421. The reversal of 23203143409 is 90434130232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10992893409 + 12210250000 = 104847^2 + 110500^2 .

It is a cyclic number.

It is not a de Polignac number, because 23203143409 - 2³ = 23203143401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23203143401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2718474 + ... + 2726995.

It is an arithmetic number, because the mean of its divisors is an integer number (5802148285).

Almost surely, 2^23203143409 is an apocalyptic number.

It is an amenable number.

23203143409 is a deficient number, since it is larger than the sum of its proper divisors (5449731).

23203143409 is an equidigital number, since it uses as much as digits as its factorization.

23203143409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449730.

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 23203143409 in words is "twenty-three billion, two hundred three million, one hundred forty-three thousand, four hundred nine".