205053003431 has 4 divisors (see below), whose sum is σ = 205384269000. Its totient is φ = 204721737864.

The previous prime is 205053003413. The next prime is 205053003439. The reversal of 205053003431 is 134300350502.

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 205053003431 - 2⁶ = 205053003367 is a prime.

It is a super-2 number, since 2×205053003431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 205053003431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205053003439) 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, 165631856 + ... + 165633093.

It is an arithmetic number, because the mean of its divisors is an integer number (51346067250).

Almost surely, 2^205053003431 is an apocalyptic number.

205053003431 is a deficient number, since it is larger than the sum of its proper divisors (331265569).

205053003431 is an equidigital number, since it uses as much as digits as its factorization.

205053003431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331265568.

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 205053003431 its reverse (134300350502), we get a palindrome (339353353933).

The spelling of 205053003431 in words is "two hundred five billion, fifty-three million, three thousand, four hundred thirty-one".