131883906 has 32 divisors (see below), whose sum is σ = 328854528. Its totient is φ = 34255440.

The previous prime is 131883901. The next prime is 131883907. The reversal of 131883906 is 609388131.

It is not an unprimeable number, because it can be changed into a prime (131883901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142270 + ... + 143193.

It is an arithmetic number, because the mean of its divisors is an integer number (10276704).

Almost surely, 2^131883906 is an apocalyptic number.

131883906 is an abundant number, since it is smaller than the sum of its proper divisors (196970622).

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

131883906 is a wasteful number, since it uses less digits than its factorization.

131883906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285486.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 131883906 is about 11484.0718388558. The cubic root of 131883906 is about 509.0150231721.

The spelling of 131883906 in words is "one hundred thirty-one million, eight hundred eighty-three thousand, nine hundred six".