321161151534103 has 2 divisors, whose sum is σ = 321161151534104. Its totient is φ = 321161151534102.

The previous prime is 321161151534101. The next prime is 321161151534107. The reversal of 321161151534103 is 301435151161123.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321161151534103 - 2¹ = 321161151534101 is a prime.

It is a super-2 number, since 2×321161151534103² (a number of 30 digits) contains 22 as substring.

Together with 321161151534101, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321161151534101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160580575767051 + 160580575767052.

It is an arithmetic number, because the mean of its divisors is an integer number (160580575767052).

Almost surely, 2^{321161151534103} is an apocalyptic number.

321161151534103 is a deficient number, since it is larger than the sum of its proper divisors (1).

321161151534103 is an equidigital number, since it uses as much as digits as its factorization.

321161151534103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 321161151534103 in words is "three hundred twenty-one trillion, one hundred sixty-one billion, one hundred fifty-one million, five hundred thirty-four thousand, one hundred three".