2011213131 has 8 divisors (see below), whose sum is σ = 2682085440. Its totient is φ = 1340574792.

The previous prime is 2011213121. The next prime is 2011213177. The reversal of 2011213131 is 1313121102.

It is a happy number.

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

It is not a de Polignac number, because 2011213131 - 2⁷ = 2011213003 is a prime.

It is a super-2 number, since 2×2011213131² = 8089956516613646322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011213131.

It is not an unprimeable number, because it can be changed into a prime (2011213111) 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, 37341 + ... + 73598.

It is an arithmetic number, because the mean of its divisors is an integer number (335260680).

Almost surely, 2^2011213131 is an apocalyptic number.

2011213131 is a deficient number, since it is larger than the sum of its proper divisors (670872309).

2011213131 is a wasteful number, since it uses less digits than its factorization.

2011213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116985.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2011213131 is about 44846.5509376139. The cubic root of 2011213131 is about 1262.2712730888.

Adding to 2011213131 its reverse (1313121102), we get a palindrome (3324334233).

The spelling of 2011213131 in words is "two billion, eleven million, two hundred thirteen thousand, one hundred thirty-one".