131315340 has 48 divisors (see below), whose sum is σ = 395968608. Its totient is φ = 32323584.

The previous prime is 131315323. The next prime is 131315351. The reversal of 131315340 is 43513131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83397 + ... + 84956.

It is an arithmetic number, because the mean of its divisors is an integer number (8249346).

Almost surely, 2^131315340 is an apocalyptic number.

131315340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131315340 is an abundant number, since it is smaller than the sum of its proper divisors (264653268).

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

131315340 is a wasteful number, since it uses less digits than its factorization.

131315340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168378 (or 168376 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131315340 is about 11459.2905539566. The cubic root of 131315340 is about 508.2824962747.

Adding to 131315340 its reverse (43513131), we get a palindrome (174828471).

It can be divided in two parts, 1313 and 15340, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 131315340 in words is "one hundred thirty-one million, three hundred fifteen thousand, three hundred forty".