31144044143031 has 4 divisors (see below), whose sum is σ = 41525392190712. Its totient is φ = 20762696095352.

The previous prime is 31144044143011. The next prime is 31144044143057. The reversal of 31144044143031 is 13034144044113.

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 31144044143031 - 2²³ = 31144035754423 is a prime.

It is a super-2 number, since 2×31144044143031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31144044142983 and 31144044143001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144044143011) 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, 5190674023836 + ... + 5190674023841.

It is an arithmetic number, because the mean of its divisors is an integer number (10381348047678).

Almost surely, 2^{31144044143031} is an apocalyptic number.

31144044143031 is a deficient number, since it is larger than the sum of its proper divisors (10381348047681).

31144044143031 is a wasteful number, since it uses less digits than its factorization.

31144044143031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10381348047680.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 31144044143031 its reverse (13034144044113), we get a palindrome (44178188187144).

The spelling of 31144044143031 in words is "thirty-one trillion, one hundred forty-four billion, forty-four million, one hundred forty-three thousand, thirty-one".