131920366 has 16 divisors (see below), whose sum is σ = 200736144. Its totient is φ = 65012224.

The previous prime is 131920351. The next prime is 131920367. The reversal of 131920366 is 663029131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131920367) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 107790 + ... + 109006.

It is an arithmetic number, because the mean of its divisors is an integer number (12546009).

Almost surely, 2^131920366 is an apocalyptic number.

131920366 is a deficient number, since it is larger than the sum of its proper divisors (68815778).

131920366 is a wasteful number, since it uses less digits than its factorization.

131920366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 131920366 is about 11485.6591452123. The cubic root of 131920366 is about 509.0619254777.

Adding to 131920366 its reverse (663029131), we get a palindrome (794949497).

The spelling of 131920366 in words is "one hundred thirty-one million, nine hundred twenty thousand, three hundred sixty-six".