1601311012103 has 32 divisors (see below), whose sum is σ = 1816246152000. Its totient is φ = 1398451461120.

The previous prime is 1601311012099. The next prime is 1601311012181. The reversal of 1601311012103 is 3012101131061.

It is a cyclic number.

It is not a de Polignac number, because 1601311012103 - 2² = 1601311012099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601311012003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121038893 + ... + 121052121.

It is an arithmetic number, because the mean of its divisors is an integer number (56757692250).

Almost surely, 2^{1601311012103} is an apocalyptic number.

1601311012103 is a deficient number, since it is larger than the sum of its proper divisors (214935139897).

1601311012103 is a wasteful number, since it uses less digits than its factorization.

1601311012103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15155.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1601311012103 its reverse (3012101131061), we get a palindrome (4613412143164).

The spelling of 1601311012103 in words is "one trillion, six hundred one billion, three hundred eleven million, twelve thousand, one hundred three".