20120402031109 has 8 divisors (see below), whose sum is σ = 20448795593408. Its totient is φ = 19792834617600.

The previous prime is 20120402031089. The next prime is 20120402031133. The reversal of 20120402031109 is 90113020402102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120402031109 - 2⁵ = 20120402031077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120402071109) 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 7 ways as a sum of consecutive naturals, for example, 206488092 + ... + 206585509.

It is an arithmetic number, because the mean of its divisors is an integer number (2556099449176).

Almost surely, 2^{20120402031109} is an apocalyptic number.

It is an amenable number.

20120402031109 is a deficient number, since it is larger than the sum of its proper divisors (328393562299).

20120402031109 is an equidigital number, since it uses as much as digits as its factorization.

20120402031109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413074395.

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 20120402031109 in words is "twenty trillion, one hundred twenty billion, four hundred two million, thirty-one thousand, one hundred nine".