20112255156031 has 4 divisors (see below), whose sum is σ = 20121049323232. Its totient is φ = 20103460988832.

The previous prime is 20112255156017. The next prime is 20112255156061. The reversal of 20112255156031 is 13065155221102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20112255156031 - 2⁹ = 20112255155519 is a prime.

It is a super-3 number, since 3×20112255156031³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112255156061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4397080170 + ... + 4397084743.

It is an arithmetic number, because the mean of its divisors is an integer number (5030262330808).

Almost surely, 2^{20112255156031} is an apocalyptic number.

20112255156031 is a deficient number, since it is larger than the sum of its proper divisors (8794167201).

20112255156031 is an equidigital number, since it uses as much as digits as its factorization.

20112255156031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794167200.

The product of its (nonzero) digits is 18000, while the sum is 34.

The spelling of 20112255156031 in words is "twenty trillion, one hundred twelve billion, two hundred fifty-five million, one hundred fifty-six thousand, thirty-one".