131738805 has 48 divisors (see below), whose sum is σ = 258358464. Its totient is φ = 63866880.

The previous prime is 131738773. The next prime is 131738807. The reversal of 131738805 is 508837131.

It is not a de Polignac number, because 131738805 - 2⁵ = 131738773 is a prime.

It is a super-2 number, since 2×131738805² = 34710225485656050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131738805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131738807) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8437 + ... + 18293.

It is an arithmetic number, because the mean of its divisors is an integer number (5382468).

Almost surely, 2^131738805 is an apocalyptic number.

131738805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131738805 is a deficient number, since it is larger than the sum of its proper divisors (126619659).

131738805 is an equidigital number, since it uses as much as digits as its factorization.

131738805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888 (or 9876 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 131738805 is about 11477.7526110297. The cubic root of 131738805 is about 508.8282788995.

The spelling of 131738805 in words is "one hundred thirty-one million, seven hundred thirty-eight thousand, eight hundred five".