2531217601 has 16 divisors (see below), whose sum is σ = 3077645760. Its totient is φ = 2051758080.

The previous prime is 2531217599. The next prime is 2531217649. The reversal of 2531217601 is 1067121352.

It is a happy number.

2531217601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2531217601 - 2¹ = 2531217599 is a prime.

It is a super-2 number, since 2×2531217601² = 12814125087224390402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2531217601.

It is not an unprimeable number, because it can be changed into a prime (2531217001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352656 + ... + 359761.

It is an arithmetic number, because the mean of its divisors is an integer number (192352860).

Almost surely, 2^2531217601 is an apocalyptic number.

It is an amenable number.

2531217601 is a deficient number, since it is larger than the sum of its proper divisors (546428159).

2531217601 is a wasteful number, since it uses less digits than its factorization.

2531217601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712464.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2531217601 is about 50311.2075088643. The cubic root of 2531217601 is about 1362.8346299929.

Adding to 2531217601 its reverse (1067121352), we get a palindrome (3598338953).

The spelling of 2531217601 in words is "two billion, five hundred thirty-one million, two hundred seventeen thousand, six hundred one".