203001131421 has 96 divisors (see below), whose sum is σ = 335083392000. Its totient is φ = 121357463040.

The previous prime is 203001131401. The next prime is 203001131429. The reversal of 203001131421 is 124131100302.

203001131421 is a `hidden beast` number, since 20 + 300 + 11 + 314 + 21 = 666.

It is not a de Polignac number, because 203001131421 - 2⁹ = 203001130909 is a prime.

It is a super-2 number, since 2×203001131421² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203001131394 and 203001131403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203001131429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 235226836 + ... + 235227698.

It is an arithmetic number, because the mean of its divisors is an integer number (3490452000).

Almost surely, 2^203001131421 is an apocalyptic number.

It is an amenable number.

203001131421 is a deficient number, since it is larger than the sum of its proper divisors (132082260579).

203001131421 is a wasteful number, since it uses less digits than its factorization.

203001131421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 203001131421 its reverse (124131100302), we get a palindrome (327132231723).

The spelling of 203001131421 in words is "two hundred three billion, one million, one hundred thirty-one thousand, four hundred twenty-one".