131656460 has 48 divisors (see below), whose sum is σ = 299569536. Its totient is φ = 48314112.

The previous prime is 131656409. The next prime is 131656463. The reversal of 131656460 is 64656131.

It is not an unprimeable number, because it can be changed into a prime (131656463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43517 + ... + 46443.

It is an arithmetic number, because the mean of its divisors is an integer number (6241032).

Almost surely, 2^131656460 is an apocalyptic number.

131656460 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 131656460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149784768).

131656460 is an abundant number, since it is smaller than the sum of its proper divisors (167913076).

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

131656460 is a wasteful number, since it uses less digits than its factorization.

131656460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122 (or 3120 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 131656460 is about 11474.1648933593. The cubic root of 131656460 is about 508.7222402938.

The spelling of 131656460 in words is "one hundred thirty-one million, six hundred fifty-six thousand, four hundred sixty".