20021431014 has 48 divisors (see below), whose sum is σ = 48177824400. Its totient is φ = 6160437504.

The previous prime is 20021431007. The next prime is 20021431019. The reversal of 20021431014 is 41013412002.

20021431014 is a `hidden beast` number, since 200 + 21 + 431 + 0 + 14 = 666.

It is a super-2 number, since 2×20021431014² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021431019) 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 23 ways as a sum of consecutive naturals, for example, 1087819 + ... + 1106070.

It is an arithmetic number, because the mean of its divisors is an integer number (1003704675).

Almost surely, 2^20021431014 is an apocalyptic number.

20021431014 is an abundant number, since it is smaller than the sum of its proper divisors (28156393386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021431014 is a wasteful number, since it uses less digits than its factorization.

20021431014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193926 (or 2193907 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20021431014 its reverse (41013412002), we get a palindrome (61034843016).

The spelling of 20021431014 in words is "twenty billion, twenty-one million, four hundred thirty-one thousand, fourteen".