631006121 has 8 divisors (see below), whose sum is σ = 642737760. Its totient is φ = 619309152.

The previous prime is 631006111. The next prime is 631006133. The reversal of 631006121 is 121600136.

631006121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 631006121 - 2¹⁰ = 631005097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 631006093 and 631006102.

It is not an unprimeable number, because it can be changed into a prime (631006111) 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, 29621 + ... + 46253.

It is an arithmetic number, because the mean of its divisors is an integer number (80342220).

Almost surely, 2^631006121 is an apocalyptic number.

It is an amenable number.

631006121 is a deficient number, since it is larger than the sum of its proper divisors (11731639).

631006121 is a wasteful number, since it uses less digits than its factorization.

631006121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17335.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 631006121 is about 25119.8352104467. The cubic root of 631006121 is about 857.7179995794.

Adding to 631006121 its reverse (121600136), we get a palindrome (752606257).

The spelling of 631006121 in words is "six hundred thirty-one million, six thousand, one hundred twenty-one".