131366742322 has 4 divisors (see below), whose sum is σ = 197050113486. Its totient is φ = 65683371160.

The previous prime is 131366742307. The next prime is 131366742341. The reversal of 131366742322 is 223247663131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 223247663131 = 223 ⋅1001110597.

It can be written as a sum of positive squares in only one way, i.e., 120047697441 + 11319044881 = 346479^2 + 106391^2 .

It is an unprimeable number.

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, 32841685579 + ... + 32841685582.

Almost surely, 2^131366742322 is an apocalyptic number.

131366742322 is a deficient number, since it is larger than the sum of its proper divisors (65683371164).

131366742322 is an equidigital number, since it uses as much as digits as its factorization.

131366742322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65683371163.

The product of its digits is 217728, while the sum is 40.

The spelling of 131366742322 in words is "one hundred thirty-one billion, three hundred sixty-six million, seven hundred forty-two thousand, three hundred twenty-two".