20131102043 has 12 divisors (see below), whose sum is σ = 22387930128. Its totient is φ = 18080318880.

The previous prime is 20131102039. The next prime is 20131102099. The reversal of 20131102043 is 34020113102.

It is not a de Polignac number, because 20131102043 - 2² = 20131102039 is a prime.

It is a super-2 number, since 2×20131102043² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131102643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1603463 + ... + 1615968.

It is an arithmetic number, because the mean of its divisors is an integer number (1865660844).

Almost surely, 2^20131102043 is an apocalyptic number.

20131102043 is a deficient number, since it is larger than the sum of its proper divisors (2256828085).

20131102043 is a wasteful number, since it uses less digits than its factorization.

20131102043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219494 (or 3219481 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20131102043 its reverse (34020113102), we get a palindrome (54151215145).

The spelling of 20131102043 in words is "twenty billion, one hundred thirty-one million, one hundred two thousand, forty-three".