20010431103440 has 40 divisors (see below), whose sum is σ = 46526039776800. Its totient is φ = 8003864921216.

The previous prime is 20010431103433. The next prime is 20010431103457. The reversal of 20010431103440 is 4430113401002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2704034 + ... + 6879873.

It is an arithmetic number, because the mean of its divisors is an integer number (1163150994420).

Almost surely, 2^{20010431103440} is an apocalyptic number.

20010431103440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010431103440 is an abundant number, since it is smaller than the sum of its proper divisors (26515608673360).

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

20010431103440 is a wasteful number, since it uses less digits than its factorization.

20010431103440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9610019 (or 9610013 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20010431103440 its reverse (4430113401002), we get a palindrome (24440544504442).

The spelling of 20010431103440 in words is "twenty trillion, ten billion, four hundred thirty-one million, one hundred three thousand, four hundred forty".