2130521531 has 8 divisors (see below), whose sum is σ = 2258688384. Its totient is φ = 2006069760.

The previous prime is 2130521501. The next prime is 2130521537. The reversal of 2130521531 is 1351250312.

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 2130521531 - 2¹⁴ = 2130505147 is a prime.

It is a super-2 number, since 2×2130521531² = 9078243988109167922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2130521497 and 2130521506.

It is not an unprimeable number, because it can be changed into a prime (2130521537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927590 + ... + 929883.

It is an arithmetic number, because the mean of its divisors is an integer number (282336048).

Almost surely, 2^2130521531 is an apocalyptic number.

2130521531 is a deficient number, since it is larger than the sum of its proper divisors (128166853).

2130521531 is a wasteful number, since it uses less digits than its factorization.

2130521531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857541.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2130521531 is about 46157.5728456339. The cubic root of 2130521531 is about 1286.7533547044.

Adding to 2130521531 its reverse (1351250312), we get a palindrome (3481771843).

The spelling of 2130521531 in words is "two billion, one hundred thirty million, five hundred twenty-one thousand, five hundred thirty-one".