131630340 has 48 divisors (see below), whose sum is σ = 380459520. Its totient is φ = 33968640.

The previous prime is 131630339. The next prime is 131630351. The reversal of 131630340 is 43036131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33525 + ... + 37244.

It is an arithmetic number, because the mean of its divisors is an integer number (7926240).

Almost surely, 2^131630340 is an apocalyptic number.

131630340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131630340 is an abundant number, since it is smaller than the sum of its proper divisors (248829180).

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

131630340 is a wasteful number, since it uses less digits than its factorization.

131630340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70812 (or 70810 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 131630340 is about 11473.0266277038. The cubic root of 131630340 is about 508.6885953977.

Adding to 131630340 its reverse (43036131), we get a palindrome (174666471).

The spelling of 131630340 in words is "one hundred thirty-one million, six hundred thirty thousand, three hundred forty".