161236322 has 8 divisors (see below), whose sum is σ = 260458716. Its totient is φ = 74416752.

The previous prime is 161236319. The next prime is 161236333. The reversal of 161236322 is 223632161.

It can be written as a sum of positive squares in 2 ways, for example, as 154728721 + 6507601 = 12439^2 + 2551^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 6201397 = 161236322 / (1 + 6 + 1 + 2 + 3 + 6 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 161236291 and 161236300.

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, 3100673 + ... + 3100724.

Almost surely, 2^161236322 is an apocalyptic number.

161236322 is a deficient number, since it is larger than the sum of its proper divisors (99222394).

161236322 is a wasteful number, since it uses less digits than its factorization.

161236322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201412.

The product of its digits is 2592, while the sum is 26.

The square root of 161236322 is about 12697.8865170547. The cubic root of 161236322 is about 544.2782264244.

Adding to 161236322 its reverse (223632161), we get a palindrome (384868483).

The spelling of 161236322 in words is "one hundred sixty-one million, two hundred thirty-six thousand, three hundred twenty-two".