131336730 has 96 divisors (see below), whose sum is σ = 413247744. Its totient is φ = 28251648.

The previous prime is 131336729. The next prime is 131336743. The reversal of 131336730 is 37633131.

It is a junction number, because it is equal to n+sod(n) for n = 131336694 and 131336703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4579 + ... + 16841.

It is an arithmetic number, because the mean of its divisors is an integer number (4304664).

Almost surely, 2^131336730 is an apocalyptic number.

131336730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 131336730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206623872).

131336730 is an abundant number, since it is smaller than the sum of its proper divisors (281911014).

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

131336730 is a wasteful number, since it uses less digits than its factorization.

131336730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12300 (or 12297 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 131336730 is about 11460.2238198039. The cubic root of 131336730 is about 508.3100928788.

Adding to 131336730 its reverse (37633131), we get a palindrome (168969861).

The spelling of 131336730 in words is "one hundred thirty-one million, three hundred thirty-six thousand, seven hundred thirty".