161473331 has 2 divisors, whose sum is σ = 161473332. Its totient is φ = 161473330.

The previous prime is 161473313. The next prime is 161473337. The reversal of 161473331 is 133374161.

Together with previous prime (161473313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161473331 is a prime.

It is a super-2 number, since 2×161473331² = 52147273248471122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 161473294 and 161473303.

It is not a weakly prime, because it can be changed into another prime (161473337) 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 as a sum of consecutive naturals, namely, 80736665 + 80736666.

It is an arithmetic number, because the mean of its divisors is an integer number (80736666).

Almost surely, 2^161473331 is an apocalyptic number.

161473331 is a deficient number, since it is larger than the sum of its proper divisors (1).

161473331 is an equidigital number, since it uses as much as digits as its factorization.

161473331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 161473331 is about 12707.2157060467. The cubic root of 161473331 is about 544.5447827457.

The spelling of 161473331 in words is "one hundred sixty-one million, four hundred seventy-three thousand, three hundred thirty-one".