20142223031 has 4 divisors (see below), whose sum is σ = 23019683472. Its totient is φ = 17264762592.

The previous prime is 20142223009. The next prime is 20142223037. The reversal of 20142223031 is 13032224102.

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

It is not a de Polignac number, because 20142223031 - 2¹⁸ = 20141960887 is a prime.

It is a super-2 number, since 2×20142223031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20142222994 and 20142223012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20142223037) 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, 1438730210 + ... + 1438730223.

It is an arithmetic number, because the mean of its divisors is an integer number (5754920868).

Almost surely, 2^20142223031 is an apocalyptic number.

20142223031 is a deficient number, since it is larger than the sum of its proper divisors (2877460441).

20142223031 is an equidigital number, since it uses as much as digits as its factorization.

20142223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877460440.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20142223031 its reverse (13032224102), we get a palindrome (33174447133).

The spelling of 20142223031 in words is "twenty billion, one hundred forty-two million, two hundred twenty-three thousand, thirty-one".