131630545 has 8 divisors (see below), whose sum is σ = 160314624. Its totient is φ = 103732464.

The previous prime is 131630533. The next prime is 131630563. The reversal of 131630545 is 545036131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131630545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196129 + ... + 196798.

It is an arithmetic number, because the mean of its divisors is an integer number (20039328).

Almost surely, 2^131630545 is an apocalyptic number.

It is an amenable number.

131630545 is a deficient number, since it is larger than the sum of its proper divisors (28684079).

131630545 is an equidigital number, since it uses as much as digits as its factorization.

131630545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392999.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 131630545 is about 11473.0355616986. The cubic root of 131630545 is about 508.6888594734.

Adding to 131630545 its reverse (545036131), we get a palindrome (676666676).

The spelling of 131630545 in words is "one hundred thirty-one million, six hundred thirty thousand, five hundred forty-five".