131630553 has 6 divisors (see below), whose sum is σ = 190133034. Its totient is φ = 87753696.

The previous prime is 131630533. The next prime is 131630563. The reversal of 131630553 is 355036131.

It can be written as a sum of positive squares in only one way, i.e., 78004224 + 53626329 = 8832^2 + 7323^2 .

It is not a de Polignac number, because 131630553 - 2⁸ = 131630297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131630533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7312800 + ... + 7312817.

It is an arithmetic number, because the mean of its divisors is an integer number (31688839).

Almost surely, 2^131630553 is an apocalyptic number.

It is an amenable number.

131630553 is a deficient number, since it is larger than the sum of its proper divisors (58502481).

131630553 is a wasteful number, since it uses less digits than its factorization.

131630553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14625623 (or 14625620 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 131630553 is about 11473.0359103421. The cubic root of 131630553 is about 508.6888697787.

Adding to 131630553 its reverse (355036131), we get a palindrome (486666684).

The spelling of 131630553 in words is "one hundred thirty-one million, six hundred thirty thousand, five hundred fifty-three".