20223120131 has 4 divisors (see below), whose sum is σ = 20309914872. Its totient is φ = 20136325392.

The previous prime is 20223120107. The next prime is 20223120157. The reversal of 20223120131 is 13102132202.

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 20223120131 - 2¹⁸ = 20222857987 is a prime.

It is a super-2 number, since 2×20223120131² (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 (20223123131) 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, 43397021 + ... + 43397486.

It is an arithmetic number, because the mean of its divisors is an integer number (5077478718).

Almost surely, 2^20223120131 is an apocalyptic number.

20223120131 is a deficient number, since it is larger than the sum of its proper divisors (86794741).

20223120131 is an equidigital number, since it uses as much as digits as its factorization.

20223120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86794740.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20223120131 its reverse (13102132202), we get a palindrome (33325252333).

The spelling of 20223120131 in words is "twenty billion, two hundred twenty-three million, one hundred twenty thousand, one hundred thirty-one".