631755022141 has 4 divisors (see below), whose sum is σ = 634749121984. Its totient is φ = 628760922300.

The previous prime is 631755022123. The next prime is 631755022169. The reversal of 631755022141 is 141220557136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631755022141 - 2¹¹ = 631755020093 is a prime.

It is a super-2 number, since 2×631755022141² (a number of 24 digits) 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 631755022141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631755052141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497049605 + ... + 1497050026.

It is an arithmetic number, because the mean of its divisors is an integer number (158687280496).

Almost surely, 2^631755022141 is an apocalyptic number.

It is an amenable number.

631755022141 is a deficient number, since it is larger than the sum of its proper divisors (2994099843).

631755022141 is a wasteful number, since it uses less digits than its factorization.

631755022141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994099842.

The product of its (nonzero) digits is 50400, while the sum is 37.

Adding to 631755022141 its reverse (141220557136), we get a palindrome (772975579277).

The spelling of 631755022141 in words is "six hundred thirty-one billion, seven hundred fifty-five million, twenty-two thousand, one hundred forty-one".