43401051431 has 8 divisors (see below), whose sum is σ = 43648965360. Its totient is φ = 43153664832.

The previous prime is 43401051409. The next prime is 43401051461. The reversal of 43401051431 is 13415010434.

It is a happy number.

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 43401051431 - 2¹⁸ = 43400789287 is a prime.

It is a super-2 number, since 2×43401051431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43401051431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43401051401) 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, 33836 + ... + 296558.

It is an arithmetic number, because the mean of its divisors is an integer number (5456120670).

Almost surely, 2^43401051431 is an apocalyptic number.

43401051431 is a deficient number, since it is larger than the sum of its proper divisors (247913929).

43401051431 is a wasteful number, since it uses less digits than its factorization.

43401051431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263665.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 43401051431 its reverse (13415010434), we get a palindrome (56816061865).

The spelling of 43401051431 in words is "forty-three billion, four hundred one million, fifty-one thousand, four hundred thirty-one".