43140031121 has 32 divisors (see below), whose sum is σ = 50805086976. Its totient is φ = 36234880000.

The previous prime is 43140031057. The next prime is 43140031157. The reversal of 43140031121 is 12113004134.

It is not a de Polignac number, because 43140031121 - 2⁶ = 43140031057 is a prime.

It is a super-2 number, since 2×43140031121² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43140031093 and 43140031102.

It is not an unprimeable number, because it can be changed into a prime (43140037121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1027085 + ... + 1068261.

It is an arithmetic number, because the mean of its divisors is an integer number (1587658968).

Almost surely, 2^43140031121 is an apocalyptic number.

43140031121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43140031121 is a deficient number, since it is larger than the sum of its proper divisors (7665055855).

43140031121 is a wasteful number, since it uses less digits than its factorization.

43140031121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41353.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 43140031121 its reverse (12113004134), we get a palindrome (55253035255).

The spelling of 43140031121 in words is "forty-three billion, one hundred forty million, thirty-one thousand, one hundred twenty-one".