202431243 has 8 divisors (see below), whose sum is σ = 308466688. Its totient is φ = 115674984.

The previous prime is 202431239. The next prime is 202431253. The reversal of 202431243 is 342134202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202431243 - 2² = 202431239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9639583 = 202431243 / (2 + 0 + 2 + 4 + 3 + 1 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202431233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4819771 + ... + 4819812.

It is an arithmetic number, because the mean of its divisors is an integer number (38558336).

Almost surely, 2^202431243 is an apocalyptic number.

202431243 is a deficient number, since it is larger than the sum of its proper divisors (106035445).

202431243 is an equidigital number, since it uses as much as digits as its factorization.

202431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639593.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 202431243 is about 14227.8333909278. The cubic root of 202431243 is about 587.1636757987.

Adding to 202431243 its reverse (342134202), we get a palindrome (544565445).

The spelling of 202431243 in words is "two hundred two million, four hundred thirty-one thousand, two hundred forty-three".