43131015401 has 8 divisors (see below), whose sum is σ = 46087109640. Its totient is φ = 40221474048.

The previous prime is 43131015383. The next prime is 43131015409. The reversal of 43131015401 is 10451013134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24257751001 + 18873264400 = 155749^2 + 137380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43131015401 - 2⁶ = 43131015337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43131015409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11636306 + ... + 11640011.

It is an arithmetic number, because the mean of its divisors is an integer number (5760888705).

Almost surely, 2^43131015401 is an apocalyptic number.

It is an amenable number.

43131015401 is a deficient number, since it is larger than the sum of its proper divisors (2956094239).

43131015401 is a wasteful number, since it uses less digits than its factorization.

43131015401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23276443.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 43131015401 its reverse (10451013134), we get a palindrome (53582028535).

The spelling of 43131015401 in words is "forty-three billion, one hundred thirty-one million, fifteen thousand, four hundred one".