31144431413 has 8 divisors (see below), whose sum is σ = 31175988480. Its totient is φ = 31112894560.

The previous prime is 31144431401. The next prime is 31144431433. The reversal of 31144431413 is 31413444113.

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 31144431413 - 2⁴ = 31144431397 is a prime.

It is a super-2 number, since 2×31144431413² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144431433) 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 7 ways as a sum of consecutive naturals, for example, 6020318 + ... + 6025488.

It is an arithmetic number, because the mean of its divisors is an integer number (3896998560).

Almost surely, 2^31144431413 is an apocalyptic number.

It is an amenable number.

31144431413 is a deficient number, since it is larger than the sum of its proper divisors (31557067).

31144431413 is a wasteful number, since it uses less digits than its factorization.

31144431413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107.

The product of its digits is 6912, while the sum is 29.

Adding to 31144431413 its reverse (31413444113), we get a palindrome (62557875526).

The spelling of 31144431413 in words is "thirty-one billion, one hundred forty-four million, four hundred thirty-one thousand, four hundred thirteen".