131478146 has 4 divisors (see below), whose sum is σ = 197217222. Its totient is φ = 65739072.

The previous prime is 131478101. The next prime is 131478167. The reversal of 131478146 is 641874131.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 131217025 + 261121 = 11455^2 + 511^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32869535 + ... + 32869538.

Almost surely, 2^131478146 is an apocalyptic number.

131478146 is a deficient number, since it is larger than the sum of its proper divisors (65739076).

131478146 is an equidigital number, since it uses as much as digits as its factorization.

131478146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65739075.

The product of its digits is 16128, while the sum is 35.

The square root of 131478146 is about 11466.3920219047. The cubic root of 131478146 is about 508.4924673387.

The spelling of 131478146 in words is "one hundred thirty-one million, four hundred seventy-eight thousand, one hundred forty-six".