161306344 has 16 divisors (see below), whose sum is σ = 305568900. Its totient is φ = 79821312.

The previous prime is 161306329. The next prime is 161306351. The reversal of 161306344 is 443603161.

It can be written as a sum of positive squares in 2 ways, for example, as 160326244 + 980100 = 12662^2 + 990^2 .

It is a super-2 number, since 2×161306344² = 52039473229292672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103159 + ... + 104710.

Almost surely, 2^161306344 is an apocalyptic number.

It is an amenable number.

161306344 is a deficient number, since it is larger than the sum of its proper divisors (144262556).

161306344 is a wasteful number, since it uses less digits than its factorization.

161306344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207972 (or 207968 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 161306344 is about 12700.6434482667. The cubic root of 161306344 is about 544.3570050640.

The spelling of 161306344 in words is "one hundred sixty-one million, three hundred six thousand, three hundred forty-four".