2011020311231 has 8 divisors (see below), whose sum is σ = 2011878298800. Its totient is φ = 2010162496320.

The previous prime is 2011020311219. The next prime is 2011020311269. The reversal of 2011020311231 is 1321130201102.

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 2011020311231 - 2³⁴ = 1993840442047 is a prime.

It is a super-3 number, since 3×2011020311231³ (a number of 38 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 (2011020311831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26673035 + ... + 26748323.

It is an arithmetic number, because the mean of its divisors is an integer number (251484787350).

Almost surely, 2^{2011020311231} is an apocalyptic number.

2011020311231 is a deficient number, since it is larger than the sum of its proper divisors (857987569).

2011020311231 is an equidigital number, since it uses as much as digits as its factorization.

2011020311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86329.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2011020311231 its reverse (1321130201102), we get a palindrome (3332150512333).

The spelling of 2011020311231 in words is "two trillion, eleven billion, twenty million, three hundred eleven thousand, two hundred thirty-one".