43431401013 has 64 divisors (see below), whose sum is σ = 79852910592. Its totient is φ = 20263322880.

The previous prime is 43431401011. The next prime is 43431401021. The reversal of 43431401013 is 31010413434.

43431401013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43431401013 - 2¹ = 43431401011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43431401011) 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, 84331 + ... + 306552.

It is an arithmetic number, because the mean of its divisors is an integer number (1247701728).

Almost surely, 2^43431401013 is an apocalyptic number.

It is an amenable number.

43431401013 is a deficient number, since it is larger than the sum of its proper divisors (36421509579).

43431401013 is a wasteful number, since it uses less digits than its factorization.

43431401013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390954.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 43431401013 its reverse (31010413434), we get a palindrome (74441814447).

It can be divided in two parts, 43431 and 401013, that added together give a palindrome (444444).

The spelling of 43431401013 in words is "forty-three billion, four hundred thirty-one million, four hundred one thousand, thirteen".