20331201131 has 4 divisors (see below), whose sum is σ = 20332599000. Its totient is φ = 20329803264.

The previous prime is 20331201103. The next prime is 20331201167. The reversal of 20331201131 is 13110213302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20331201131 - 2³⁰ = 19257459307 is a prime.

It is a super-2 number, since 2×20331201131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331201101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676886 + ... + 706283.

It is an arithmetic number, because the mean of its divisors is an integer number (5083149750).

Almost surely, 2^20331201131 is an apocalyptic number.

20331201131 is a deficient number, since it is larger than the sum of its proper divisors (1397869).

20331201131 is a wasteful number, since it uses less digits than its factorization.

20331201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397868.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20331201131 its reverse (13110213302), we get a palindrome (33441414433).

The spelling of 20331201131 in words is "twenty billion, three hundred thirty-one million, two hundred one thousand, one hundred thirty-one".