320234400146 has 4 divisors (see below), whose sum is σ = 480351600222. Its totient is φ = 160117200072.

The previous prime is 320234400137. The next prime is 320234400209. The reversal of 320234400146 is 641004432023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641004432023 = 6827 ⋅93892549.

It can be written as a sum of positive squares in only one way, i.e., 227444101921 + 92790298225 = 476911^2 + 304615^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80058600035 + ... + 80058600038.

Almost surely, 2^320234400146 is an apocalyptic number.

320234400146 is a deficient number, since it is larger than the sum of its proper divisors (160117200076).

320234400146 is a wasteful number, since it uses less digits than its factorization.

320234400146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160117200075.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 320234400146 its reverse (641004432023), we get a palindrome (961238832169).

The spelling of 320234400146 in words is "three hundred twenty billion, two hundred thirty-four million, four hundred thousand, one hundred forty-six".