131475906 has 16 divisors (see below), whose sum is σ = 292168800. Its totient is φ = 43825284.

The previous prime is 131475899. The next prime is 131475907. The reversal of 131475906 is 609574131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131475907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217316 + ... + 1217423.

It is an arithmetic number, because the mean of its divisors is an integer number (18260550).

Almost surely, 2^131475906 is an apocalyptic number.

131475906 is an abundant number, since it is smaller than the sum of its proper divisors (160692894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131475906 is a wasteful number, since it uses less digits than its factorization.

131475906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434750 (or 2434744 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 131475906 is about 11466.2943447306. The cubic root of 131475906 is about 508.4895795848.

The spelling of 131475906 in words is "one hundred thirty-one million, four hundred seventy-five thousand, nine hundred six".