131510340 has 144 divisors (see below), whose sum is σ = 439927488. Its totient is φ = 31594752.

The previous prime is 131510333. The next prime is 131510341. The reversal of 131510340 is 43015131.

131510340 is a `hidden beast` number, since 1 + 315 + 10 + 340 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131510341) 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 47 ways as a sum of consecutive naturals, for example, 99967 + ... + 101273.

It is an arithmetic number, because the mean of its divisors is an integer number (3055052).

Almost surely, 2^131510340 is an apocalyptic number.

131510340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131510340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219963744).

131510340 is an abundant number, since it is smaller than the sum of its proper divisors (308417148).

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

131510340 is a wasteful number, since it uses less digits than its factorization.

131510340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131510340 is about 11467.7957777421. The cubic root of 131510340 is about 508.5339674435.

Adding to 131510340 its reverse (43015131), we get a palindrome (174525471).

The spelling of 131510340 in words is "one hundred thirty-one million, five hundred ten thousand, three hundred forty".