202143431 has 8 divisors (see below), whose sum is σ = 235380384. Its totient is φ = 169996320.

The previous prime is 202143421. The next prime is 202143433. The reversal of 202143431 is 134341202.

202143431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 202143431 - 2⁶ = 202143367 is a prime.

It is a super-2 number, since 2×202143431² = 81723933392903522, 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 (202143433) 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, 272060 + ... + 272801.

It is an arithmetic number, because the mean of its divisors is an integer number (29422548).

Almost surely, 2^202143431 is an apocalyptic number.

202143431 is a deficient number, since it is larger than the sum of its proper divisors (33236953).

202143431 is an equidigital number, since it uses as much as digits as its factorization.

202143431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544921.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 202143431 is about 14217.7153931284. The cubic root of 202143431 is about 586.8852719603.

Adding to 202143431 its reverse (134341202), we get a palindrome (336484633).

The spelling of 202143431 in words is "two hundred two million, one hundred forty-three thousand, four hundred thirty-one".