2431061521 has 16 divisors (see below), whose sum is σ = 2900726784. Its totient is φ = 1992087504.

The previous prime is 2431061519. The next prime is 2431061531. The reversal of 2431061521 is 1251601342.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2431061521 - 2¹ = 2431061519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2431061531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448590 + ... + 453976.

It is an arithmetic number, because the mean of its divisors is an integer number (181295424).

Almost surely, 2^2431061521 is an apocalyptic number.

It is an amenable number.

2431061521 is a deficient number, since it is larger than the sum of its proper divisors (469665263).

2431061521 is a wasteful number, since it uses less digits than its factorization.

2431061521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8220.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2431061521 is about 49305.7960183182. The cubic root of 2431061521 is about 1344.6171611160.

Adding to 2431061521 its reverse (1251601342), we get a palindrome (3682662863).

The spelling of 2431061521 in words is "two billion, four hundred thirty-one million, sixty-one thousand, five hundred twenty-one".