131303340 has 108 divisors (see below), whose sum is σ = 463344336. Its totient is φ = 30010176.

The previous prime is 131303327. The next prime is 131303363. The reversal of 131303340 is 43303131.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1377 + ... + 16263.

Almost surely, 2^131303340 is an apocalyptic number.

131303340 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 131303340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231672168).

131303340 is an abundant number, since it is smaller than the sum of its proper divisors (332040996).

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

131303340 is a wasteful number, since it uses less digits than its factorization.

131303340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14916 (or 14904 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 131303340 is about 11458.7669493711. The cubic root of 131303340 is about 508.2670129967.

Adding to 131303340 its reverse (43303131), we get a palindrome (174606471).

The spelling of 131303340 in words is "one hundred thirty-one million, three hundred three thousand, three hundred forty".