20131011043 has 64 divisors (see below), whose sum is σ = 26140262400. Its totient is φ = 15221520000.

The previous prime is 20131011031. The next prime is 20131011049. The reversal of 20131011043 is 34011013102.

It is a cyclic number.

It is not a de Polignac number, because 20131011043 - 2¹⁷ = 20130879971 is a prime.

It is a super-2 number, since 2×20131011043² (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 (20131011049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4967368 + ... + 4971418.

It is an arithmetic number, because the mean of its divisors is an integer number (408441600).

Almost surely, 2^20131011043 is an apocalyptic number.

20131011043 is a deficient number, since it is larger than the sum of its proper divisors (6009251357).

20131011043 is a wasteful number, since it uses less digits than its factorization.

20131011043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4184.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20131011043 its reverse (34011013102), we get a palindrome (54142024145).

The spelling of 20131011043 in words is "twenty billion, one hundred thirty-one million, eleven thousand, forty-three".