161361003 has 8 divisors (see below), whose sum is σ = 215528400. Its totient is φ = 107383808.

The previous prime is 161360999. The next prime is 161361037. The reversal of 161361003 is 300163161.

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 161361003 - 2² = 161360999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161361073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45558 + ... + 48971.

It is an arithmetic number, because the mean of its divisors is an integer number (26941050).

Almost surely, 2^161361003 is an apocalyptic number.

161361003 is a deficient number, since it is larger than the sum of its proper divisors (54167397).

161361003 is an equidigital number, since it uses as much as digits as its factorization.

161361003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95101.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 161361003 is about 12702.7950861218. The cubic root of 161361003 is about 544.4184836326.

The spelling of 161361003 in words is "one hundred sixty-one million, three hundred sixty-one thousand, three".