131043478 has 4 divisors (see below), whose sum is σ = 196565220. Its totient is φ = 65521738.

The previous prime is 131043467. The next prime is 131043499. The reversal of 131043478 is 874340131.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 32760868 + ... + 32760871.

It is an arithmetic number, because the mean of its divisors is an integer number (49141305).

Almost surely, 2^131043478 is an apocalyptic number.

131043478 is a deficient number, since it is larger than the sum of its proper divisors (65521742).

131043478 is an equidigital number, since it uses as much as digits as its factorization.

131043478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65521741.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 131043478 is about 11447.4223299396. The cubic root of 131043478 is about 507.9314883736.

The spelling of 131043478 in words is "one hundred thirty-one million, forty-three thousand, four hundred seventy-eight".