20120031312042 has 16 divisors (see below), whose sum is σ = 40240130657760. Its totient is φ = 6706665765072.

The previous prime is 20120031312023. The next prime is 20120031312077. The reversal of 20120031312042 is 24021313002102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525809 + ... + 6524427.

It is an arithmetic number, because the mean of its divisors is an integer number (2515008166110).

Almost surely, 2^{20120031312042} is an apocalyptic number.

20120031312042 is an abundant number, since it is smaller than the sum of its proper divisors (20120099345718).

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

20120031312042 is a wasteful number, since it uses less digits than its factorization.

20120031312042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5669477.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20120031312042 its reverse (24021313002102), we get a palindrome (44141344314144).

The spelling of 20120031312042 in words is "twenty trillion, one hundred twenty billion, thirty-one million, three hundred twelve thousand, forty-two".