20314003440 has 80 divisors (see below), whose sum is σ = 64675423008. Its totient is φ = 5270658048.

The previous prime is 20314003439. The next prime is 20314003471. The reversal of 20314003440 is 4430041302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×20314003440³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134927 + ... + 1152686.

Almost surely, 2^20314003440 is an apocalyptic number.

20314003440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20314003440 is an abundant number, since it is smaller than the sum of its proper divisors (44361419568).

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

20314003440 is a wasteful number, since it uses less digits than its factorization.

20314003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287666 (or 2287660 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20314003440 its reverse (4430041302), we get a palindrome (24744044742).

The spelling of 20314003440 in words is "twenty billion, three hundred fourteen million, three thousand, four hundred forty".