20343031011 has 24 divisors (see below), whose sum is σ = 32265206064. Its totient is φ = 12764252160.

The previous prime is 20343031001. The next prime is 20343031021. The reversal of 20343031011 is 11013034302.

20343031011 is a `hidden beast` number, since 2 + 0 + 343 + 0 + 310 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (20343031001) and next prime (20343031021).

It is not a de Polignac number, because 20343031011 - 2⁶ = 20343030947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20343031001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2458110 + ... + 2466371.

It is an arithmetic number, because the mean of its divisors is an integer number (1344383586).

Almost surely, 2^20343031011 is an apocalyptic number.

20343031011 is a deficient number, since it is larger than the sum of its proper divisors (11922175053).

20343031011 is an equidigital number, since it uses as much as digits as its factorization.

20343031011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4924513 (or 4924501 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20343031011 its reverse (11013034302), we get a palindrome (31356065313).

The spelling of 20343031011 in words is "twenty billion, three hundred forty-three million, thirty-one thousand, eleven".