20212431144 has 32 divisors (see below), whose sum is σ = 50727712320. Its totient is φ = 6711259136.

The previous prime is 20212431143. The next prime is 20212431193. The reversal of 20212431144 is 44113421202.

It is a super-2 number, since 2×20212431144² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20212431143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632324 + ... + 1644659.

It is an arithmetic number, because the mean of its divisors is an integer number (1585241010).

Almost surely, 2^20212431144 is an apocalyptic number.

20212431144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20212431144 is an abundant number, since it is smaller than the sum of its proper divisors (30515281176).

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

20212431144 is a wasteful number, since it uses less digits than its factorization.

20212431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277249 (or 3277245 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20212431144 its reverse (44113421202), we get a palindrome (64325852346).

The spelling of 20212431144 in words is "twenty billion, two hundred twelve million, four hundred thirty-one thousand, one hundred forty-four".