31431230344403 has 8 divisors (see below), whose sum is σ = 31497098417280. Its totient is φ = 31365363312640.

The previous prime is 31431230344379. The next prime is 31431230344433. The reversal of 31431230344403 is 30444303213413.

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 31431230344403 - 2²² = 31431226150099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31431230344433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102974873 + ... + 103279653.

It is an arithmetic number, because the mean of its divisors is an integer number (3937137302160).

Almost surely, 2^{31431230344403} is an apocalyptic number.

31431230344403 is a deficient number, since it is larger than the sum of its proper divisors (65868072877).

31431230344403 is a wasteful number, since it uses less digits than its factorization.

31431230344403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520557.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 31431230344403 its reverse (30444303213413), we get a palindrome (61875533557816).

The spelling of 31431230344403 in words is "thirty-one trillion, four hundred thirty-one billion, two hundred thirty million, three hundred forty-four thousand, four hundred three".