1001234432431 has 4 divisors (see below), whose sum is σ = 1001287784952. Its totient is φ = 1001181079912.

The previous prime is 1001234432413. The next prime is 1001234432447. The reversal of 1001234432431 is 1342344321001.

It is a happy number.

1001234432431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001234432431 - 2⁹ = 1001234431919 is a prime.

It is a super-2 number, since 2×1001234432431² (a number of 25 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 1001234432431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001234435431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26648101 + ... + 26685646.

It is an arithmetic number, because the mean of its divisors is an integer number (250321946238).

Almost surely, 2^{1001234432431} is an apocalyptic number.

1001234432431 is a deficient number, since it is larger than the sum of its proper divisors (53352521).

1001234432431 is an equidigital number, since it uses as much as digits as its factorization.

1001234432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53352520.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1001234432431 its reverse (1342344321001), we get a palindrome (2343578753432).

The spelling of 1001234432431 in words is "one trillion, one billion, two hundred thirty-four million, four hundred thirty-two thousand, four hundred thirty-one".