31223322144431 has 8 divisors (see below), whose sum is σ = 31936036112640. Its totient is φ = 30512624341528.

The previous prime is 31223322144401. The next prime is 31223322144439. The reversal of 31223322144431 is 13444122332213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31223322144431 - 2³⁰ = 31222248402607 is a prime.

It is a super-2 number, since 2×31223322144431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31223322144391 and 31223322144400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223322144439) 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, 504010001 + ... + 504071946.

It is an arithmetic number, because the mean of its divisors is an integer number (3992004514080).

Almost surely, 2^{31223322144431} is an apocalyptic number.

31223322144431 is a deficient number, since it is larger than the sum of its proper divisors (712713968209).

31223322144431 is a wasteful number, since it uses less digits than its factorization.

31223322144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008082653.

The product of its digits is 82944, while the sum is 35.

Adding to 31223322144431 its reverse (13444122332213), we get a palindrome (44667444476644).

The spelling of 31223322144431 in words is "thirty-one trillion, two hundred twenty-three billion, three hundred twenty-two million, one hundred forty-four thousand, four hundred thirty-one".