203403211020401 has 16 divisors (see below), whose sum is σ = 232780623410688. Its totient is φ = 174105771840000.

The previous prime is 203403211020313. The next prime is 203403211020413. The reversal of 203403211020401 is 104020112304302.

It is not a de Polignac number, because 203403211020401 - 2²² = 203403206826097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203403211020901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119863421 + ... + 121548533.

It is an arithmetic number, because the mean of its divisors is an integer number (14548788963168).

Almost surely, 2^{203403211020401} is an apocalyptic number.

It is an amenable number.

203403211020401 is a deficient number, since it is larger than the sum of its proper divisors (29377412390287).

203403211020401 is a wasteful number, since it uses less digits than its factorization.

203403211020401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708832.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 203403211020401 its reverse (104020112304302), we get a palindrome (307423323324703).

The spelling of 203403211020401 in words is "two hundred three trillion, four hundred three billion, two hundred eleven million, twenty thousand, four hundred one".