161013 has 8 divisors (see below), whose sum is σ = 216576. Its totient is φ = 106400.

The previous prime is 161009. The next prime is 161017. The reversal of 161013 is 310161.

It is an interprime number because it is at equal distance from previous prime (161009) and next prime (161017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161013 - 2² = 161009 is a prime.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 161013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433 + ... + 713.

It is an arithmetic number, because the mean of its divisors is an integer number (27072).

2¹⁶¹⁰¹³ is an apocalyptic number.

It is an amenable number.

161013 is a deficient number, since it is larger than the sum of its proper divisors (55563).

161013 is a wasteful number, since it uses less digits than its factorization.

161013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 161013 is about 401.2642520833. The cubic root of 161013 is about 54.4026824297.

Adding to 161013 its reverse (310161), we get a palindrome (471174).

The spelling of 161013 in words is "one hundred sixty-one thousand, thirteen".