20041171631 has 8 divisors (see below), whose sum is σ = 21591830400. Its totient is φ = 18491802912.

The previous prime is 20041171547. The next prime is 20041171651. The reversal of 20041171631 is 13617114002.

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 20041171631 - 2¹⁸ = 20040909487 is a prime.

It is a super-2 number, since 2×20041171631² (a number of 21 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 20041171631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20041171651) 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, 290120 + ... + 352493.

It is an arithmetic number, because the mean of its divisors is an integer number (2698978800).

Almost surely, 2^20041171631 is an apocalyptic number.

20041171631 is a deficient number, since it is larger than the sum of its proper divisors (1550658769).

20041171631 is a wasteful number, since it uses less digits than its factorization.

20041171631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645025.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 20041171631 its reverse (13617114002), we get a palindrome (33658285633).

The spelling of 20041171631 in words is "twenty billion, forty-one million, one hundred seventy-one thousand, six hundred thirty-one".