131385490 has 16 divisors (see below), whose sum is σ = 236794752. Its totient is φ = 52487344.

The previous prime is 131385487. The next prime is 131385491. The reversal of 131385490 is 94583131.

It is not an unprimeable number, because it can be changed into a prime (131385491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (14799672).

Almost surely, 2^131385490 is an apocalyptic number.

131385490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131385490 is a deficient number, since it is larger than the sum of its proper divisors (105409262).

131385490 is a wasteful number, since it uses less digits than its factorization.

131385490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16721.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 131385490 is about 11462.3509804926. The cubic root of 131385490 is about 508.3729900681.

The spelling of 131385490 in words is "one hundred thirty-one million, three hundred eighty-five thousand, four hundred ninety".