2011020312231 has 48 divisors (see below), whose sum is σ = 3344172436800. Its totient is φ = 1140720537600.

The previous prime is 2011020312209. The next prime is 2011020312233. The reversal of 2011020312231 is 1322130201102.

2011020312231 is a `hidden beast` number, since 20 + 1 + 102 + 0 + 312 + 231 = 666.

It is not a de Polignac number, because 2011020312231 - 2⁶ = 2011020312167 is a prime.

It is a super-2 number, since 2×2011020312231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020312233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14961681 + ... + 15095493.

It is an arithmetic number, because the mean of its divisors is an integer number (69670259100).

Almost surely, 2^{2011020312231} is an apocalyptic number.

2011020312231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2011020312231 is a deficient number, since it is larger than the sum of its proper divisors (1333152124569).

2011020312231 is a wasteful number, since it uses less digits than its factorization.

2011020312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135576 (or 135573 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2011020312231 its reverse (1322130201102), we get a palindrome (3333150513333).

The spelling of 2011020312231 in words is "two trillion, eleven billion, twenty million, three hundred twelve thousand, two hundred thirty-one".