203241311421 has 4 divisors (see below), whose sum is σ = 270988415232. Its totient is φ = 135494207612.

The previous prime is 203241311419. The next prime is 203241311423. The reversal of 203241311421 is 124113142302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (203241311419) and next prime (203241311423).

It is a cyclic number.

It is not a de Polignac number, because 203241311421 - 2¹ = 203241311419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203241311391 and 203241311400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203241311423) 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, 33873551901 + ... + 33873551906.

It is an arithmetic number, because the mean of its divisors is an integer number (67747103808).

Almost surely, 2^203241311421 is an apocalyptic number.

It is an amenable number.

203241311421 is a deficient number, since it is larger than the sum of its proper divisors (67747103811).

203241311421 is an equidigital number, since it uses as much as digits as its factorization.

203241311421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67747103810.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 203241311421 its reverse (124113142302), we get a palindrome (327354453723).

The spelling of 203241311421 in words is "two hundred three billion, two hundred forty-one million, three hundred eleven thousand, four hundred twenty-one".