131967478 has 12 divisors (see below), whose sum is σ = 199570932. Its totient is φ = 65448180.

The previous prime is 131967469. The next prime is 131967497. The reversal of 131967478 is 874769131.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 30213 + ... + 34303.

It is an arithmetic number, because the mean of its divisors is an integer number (16630911).

Almost surely, 2^131967478 is an apocalyptic number.

131967478 is a deficient number, since it is larger than the sum of its proper divisors (67603454).

131967478 is an equidigital number, since it uses as much as digits as its factorization.

131967478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4347 (or 4220 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 131967478 is about 11487.7098675062. The cubic root of 131967478 is about 509.1225177672.

The spelling of 131967478 in words is "one hundred thirty-one million, nine hundred sixty-seven thousand, four hundred seventy-eight".