161351003 has 8 divisors (see below), whose sum is σ = 183672576. Its totient is φ = 140305000.

The previous prime is 161350999. The next prime is 161351009. The reversal of 161351003 is 300153161.

It is a happy number.

161351003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161351003 - 2² = 161350999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161351009) 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, 318623 + ... + 319128.

It is an arithmetic number, because the mean of its divisors is an integer number (22959072).

Almost surely, 2^161351003 is an apocalyptic number.

161351003 is a deficient number, since it is larger than the sum of its proper divisors (22321573).

161351003 is a wasteful number, since it uses less digits than its factorization.

161351003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637785.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 161351003 is about 12702.4014658646. The cubic root of 161351003 is about 544.4072370133.

The spelling of 161351003 in words is "one hundred sixty-one million, three hundred fifty-one thousand, three".