20011310131 has 4 divisors (see below), whose sum is σ = 21064537000. Its totient is φ = 18958083264.

The previous prime is 20011310129. The next prime is 20011310141. The reversal of 20011310131 is 13101311002.

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

It is not a de Polignac number, because 20011310131 - 2¹ = 20011310129 is a prime.

It is a super-2 number, since 2×20011310131² (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 (20011310141) 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, 526613406 + ... + 526613443.

It is an arithmetic number, because the mean of its divisors is an integer number (5266134250).

Almost surely, 2^20011310131 is an apocalyptic number.

20011310131 is a deficient number, since it is larger than the sum of its proper divisors (1053226869).

20011310131 is a wasteful number, since it uses less digits than its factorization.

20011310131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053226868.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 20011310131 its reverse (13101311002), we get a palindrome (33112621133).

The spelling of 20011310131 in words is "twenty billion, eleven million, three hundred ten thousand, one hundred thirty-one".