131477506 has 4 divisors (see below), whose sum is σ = 197216262. Its totient is φ = 65738752.

The previous prime is 131477497. The next prime is 131477513. The reversal of 131477506 is 605774131.

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., 117527281 + 13950225 = 10841^2 + 3735^2 .

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, 32869375 + ... + 32869378.

Almost surely, 2^131477506 is an apocalyptic number.

131477506 is a deficient number, since it is larger than the sum of its proper divisors (65738756).

131477506 is an equidigital number, since it uses as much as digits as its factorization.

131477506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65738755.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 131477506 is about 11466.3641142256. The cubic root of 131477506 is about 508.4916422695.

The spelling of 131477506 in words is "one hundred thirty-one million, four hundred seventy-seven thousand, five hundred six".