631725061211 has 8 divisors (see below), whose sum is σ = 669727703424. Its totient is φ = 594823944960.

The previous prime is 631725061169. The next prime is 631725061217. The reversal of 631725061211 is 112160527136.

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 631725061211 - 2⁶ = 631725061147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631725061217) 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, 275380310 + ... + 275382603.

It is an arithmetic number, because the mean of its divisors is an integer number (83715962928).

Almost surely, 2^631725061211 is an apocalyptic number.

631725061211 is a deficient number, since it is larger than the sum of its proper divisors (38002642213).

631725061211 is a wasteful number, since it uses less digits than its factorization.

631725061211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550762981.

The product of its (nonzero) digits is 15120, while the sum is 35.

Adding to 631725061211 its reverse (112160527136), we get a palindrome (743885588347).

The spelling of 631725061211 in words is "six hundred thirty-one billion, seven hundred twenty-five million, sixty-one thousand, two hundred eleven".