1401002400431 has 4 divisors (see below), whose sum is σ = 1404971246112. Its totient is φ = 1397033554752.

The previous prime is 1401002400401. The next prime is 1401002400437. The reversal of 1401002400431 is 1340042001041.

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 1401002400431 - 2⁶ = 1401002400367 is a prime.

It is a super-2 number, since 2×1401002400431² (a number of 25 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 (1401002400437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984422311 + ... + 1984423016.

It is an arithmetic number, because the mean of its divisors is an integer number (351242811528).

Almost surely, 2^{1401002400431} is an apocalyptic number.

1401002400431 is a deficient number, since it is larger than the sum of its proper divisors (3968845681).

1401002400431 is an equidigital number, since it uses as much as digits as its factorization.

1401002400431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968845680.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1401002400431 its reverse (1340042001041), we get a palindrome (2741044401472).

The spelling of 1401002400431 in words is "one trillion, four hundred one billion, two million, four hundred thousand, four hundred thirty-one".