43131440311 has 16 divisors (see below), whose sum is σ = 44744171904. Its totient is φ = 41542822944.

The previous prime is 43131440291. The next prime is 43131440383. The reversal of 43131440311 is 11304413134.

It is a happy number.

43131440311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43131440311 - 2⁵ = 43131440279 is a prime.

It is a super-2 number, since 2×43131440311² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43131440411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6818196 + ... + 6824518.

It is an arithmetic number, because the mean of its divisors is an integer number (2796510744).

Almost surely, 2^43131440311 is an apocalyptic number.

43131440311 is a deficient number, since it is larger than the sum of its proper divisors (1612731593).

43131440311 is a wasteful number, since it uses less digits than its factorization.

43131440311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 43131440311 its reverse (11304413134), we get a palindrome (54435853445).

The spelling of 43131440311 in words is "forty-three billion, one hundred thirty-one million, four hundred forty thousand, three hundred eleven".