131564894 has 4 divisors (see below), whose sum is σ = 197347344. Its totient is φ = 65782446.

The previous prime is 131564863. The next prime is 131564903. The reversal of 131564894 is 498465131.

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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32891222 + ... + 32891225.

It is an arithmetic number, because the mean of its divisors is an integer number (49336836).

Almost surely, 2^131564894 is an apocalyptic number.

131564894 is a deficient number, since it is larger than the sum of its proper divisors (65782450).

131564894 is an equidigital number, since it uses as much as digits as its factorization.

131564894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65782449.

The product of its digits is 103680, while the sum is 41.

The square root of 131564894 is about 11470.1741050430. The cubic root of 131564894 is about 508.6042755445.

The spelling of 131564894 in words is "one hundred thirty-one million, five hundred sixty-four thousand, eight hundred ninety-four".