203165361323401 has 2 divisors, whose sum is σ = 203165361323402. Its totient is φ = 203165361323400.

The previous prime is 203165361323387. The next prime is 203165361323459. The reversal of 203165361323401 is 104323163561302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192372322927225 + 10793038396176 = 13869835^2 + 3285276^2 .

It is a cyclic number.

It is not a de Polignac number, because 203165361323401 - 2¹¹ = 203165361321353 is a prime.

It is a super-2 number, since 2×203165361323401² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (203165361323801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101582680661700 + 101582680661701.

It is an arithmetic number, because the mean of its divisors is an integer number (101582680661701).

Almost surely, 2^{203165361323401} is an apocalyptic number.

It is an amenable number.

203165361323401 is a deficient number, since it is larger than the sum of its proper divisors (1).

203165361323401 is an equidigital number, since it uses as much as digits as its factorization.

203165361323401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 203165361323401 in words is "two hundred three trillion, one hundred sixty-five billion, three hundred sixty-one million, three hundred twenty-three thousand, four hundred one".