253430143 has 4 divisors (see below), whose sum is σ = 259611408. Its totient is φ = 247248880.

The previous prime is 253430087. The next prime is 253430167. The reversal of 253430143 is 341034352.

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

It is a cyclic number.

It is not a de Polignac number, because 253430143 - 2¹³ = 253421951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253430743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3090571 + ... + 3090652.

It is an arithmetic number, because the mean of its divisors is an integer number (64902852).

Almost surely, 2^253430143 is an apocalyptic number.

253430143 is a deficient number, since it is larger than the sum of its proper divisors (6181265).

253430143 is an equidigital number, since it uses as much as digits as its factorization.

253430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181264.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 253430143 is about 15919.4894076412. The cubic root of 253430143 is about 632.8285870986.

Adding to 253430143 its reverse (341034352), we get a palindrome (594464495).

The spelling of 253430143 in words is "two hundred fifty-three million, four hundred thirty thousand, one hundred forty-three".