161210003 has 8 divisors (see below), whose sum is σ = 170635920. Its totient is φ = 151878240.

The previous prime is 161209969. The next prime is 161210011. The reversal of 161210003 is 300012161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161210003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161210003.

It is not an unprimeable number, because it can be changed into a prime (161210083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20000 + ... + 26877.

It is an arithmetic number, because the mean of its divisors is an integer number (21329490).

Almost surely, 2^161210003 is an apocalyptic number.

161210003 is a deficient number, since it is larger than the sum of its proper divisors (9425917).

161210003 is a wasteful number, since it uses less digits than its factorization.

161210003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47077.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 161210003 is about 12696.8501211915. The cubic root of 161210003 is about 544.2486101900.

Adding to 161210003 its reverse (300012161), we get a palindrome (461222164).

The spelling of 161210003 in words is "one hundred sixty-one million, two hundred ten thousand, three".