203243632611401 has 16 divisors (see below), whose sum is σ = 211857310199808. Its totient is φ = 194758914790800.

The previous prime is 203243632611353. The next prime is 203243632611419. The reversal of 203243632611401 is 104116236342302.

It is a cyclic number.

It is not a de Polignac number, because 203243632611401 - 2⁴² = 198845586100297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203243632611431) 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, 29906210 + ... + 36067556.

It is an arithmetic number, because the mean of its divisors is an integer number (13241081887488).

Almost surely, 2^{203243632611401} is an apocalyptic number.

It is an amenable number.

203243632611401 is a deficient number, since it is larger than the sum of its proper divisors (8613677588407).

203243632611401 is a wasteful number, since it uses less digits than its factorization.

203243632611401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171812.

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 203243632611401 its reverse (104116236342302), we get a palindrome (307359868953703).

The spelling of 203243632611401 in words is "two hundred three trillion, two hundred forty-three billion, six hundred thirty-two million, six hundred eleven thousand, four hundred one".