131630521 has 8 divisors (see below), whose sum is σ = 145620288. Its totient is φ = 117978000.

The previous prime is 131630501. The next prime is 131630531. The reversal of 131630521 is 125036131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 131630521 - 2¹¹ = 131628473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131630492 and 131630501.

It is not an unprimeable number, because it can be changed into a prime (131630501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83490 + ... + 85051.

It is an arithmetic number, because the mean of its divisors is an integer number (18202536).

Almost surely, 2^131630521 is an apocalyptic number.

131630521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131630521 is a deficient number, since it is larger than the sum of its proper divisors (13989767).

131630521 is a wasteful number, since it uses less digits than its factorization.

131630521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168623.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 131630521 is about 11473.0345157678. The cubic root of 131630521 is about 508.6888285572.

Adding to 131630521 its reverse (125036131), we get a palindrome (256666652).

The spelling of 131630521 in words is "one hundred thirty-one million, six hundred thirty thousand, five hundred twenty-one".