161030003 has 2 divisors, whose sum is σ = 161030004. Its totient is φ = 161030002.

The previous prime is 161029993. The next prime is 161030021. The reversal of 161030003 is 300030161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161030003 - 2⁴ = 161029987 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161030003.

It is not a weakly prime, because it can be changed into another prime (161030063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80515001 + 80515002.

It is an arithmetic number, because the mean of its divisors is an integer number (80515002).

Almost surely, 2^161030003 is an apocalyptic number.

161030003 is a deficient number, since it is larger than the sum of its proper divisors (1).

161030003 is an equidigital number, since it uses as much as digits as its factorization.

161030003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 161030003 is about 12689.7597691997. The cubic root of 161030003 is about 544.0459733981.

Adding to 161030003 its reverse (300030161), we get a palindrome (461060164).

It can be divided in two parts, 1610 and 30003, that added together give a palindrome (31613).

The spelling of 161030003 in words is "one hundred sixty-one million, thirty thousand, three".