131511340 has 12 divisors (see below), whose sum is σ = 276173856. Its totient is φ = 52604528.

The previous prime is 131511323. The next prime is 131511377. The reversal of 131511340 is 43115131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3287764 + ... + 3287803.

It is an arithmetic number, because the mean of its divisors is an integer number (23014488).

Almost surely, 2^131511340 is an apocalyptic number.

131511340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131511340 is an abundant number, since it is smaller than the sum of its proper divisors (144662516).

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

131511340 is a wasteful number, since it uses less digits than its factorization.

131511340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575576 (or 6575574 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 131511340 is about 11467.8393780171. The cubic root of 131511340 is about 508.5352563983.

Adding to 131511340 its reverse (43115131), we get a palindrome (174626471).

The spelling of 131511340 in words is "one hundred thirty-one million, five hundred eleven thousand, three hundred forty".