131268646 has 4 divisors (see below), whose sum is σ = 196902972. Its totient is φ = 65634322.

The previous prime is 131268619. The next prime is 131268653. The reversal of 131268646 is 646862131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32817160 + ... + 32817163.

It is an arithmetic number, because the mean of its divisors is an integer number (49225743).

Almost surely, 2^131268646 is an apocalyptic number.

131268646 is a deficient number, since it is larger than the sum of its proper divisors (65634326).

131268646 is an equidigital number, since it uses as much as digits as its factorization.

131268646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65634325.

The product of its digits is 41472, while the sum is 37.

The square root of 131268646 is about 11457.2529866456. The cubic root of 131268646 is about 508.2222429523. Note that the first 4 decimals are identical.

The spelling of 131268646 in words is "one hundred thirty-one million, two hundred sixty-eight thousand, six hundred forty-six".