202122431 has 8 divisors (see below), whose sum is σ = 238962720. Its totient is φ = 167273568.

The previous prime is 202122421. The next prime is 202122433. The reversal of 202122431 is 134221202.

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

It is not a de Polignac number, because 202122431 - 2¹⁰ = 202121407 is a prime.

It is a super-2 number, since 2×202122431² = 81706954226699522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202122433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497636 + ... + 498041.

It is an arithmetic number, because the mean of its divisors is an integer number (29870340).

Almost surely, 2^202122431 is an apocalyptic number.

202122431 is a deficient number, since it is larger than the sum of its proper divisors (36840289).

202122431 is an equidigital number, since it uses as much as digits as its factorization.

202122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995713.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 202122431 is about 14216.9768586715. The cubic root of 202122431 is about 586.8649480787.

Adding to 202122431 its reverse (134221202), we get a palindrome (336343633).

The spelling of 202122431 in words is "two hundred two million, one hundred twenty-two thousand, four hundred thirty-one".