31144203031 has 8 divisors (see below), whose sum is σ = 33062321664. Its totient is φ = 29235651840.

The previous prime is 31144203023. The next prime is 31144203089. The reversal of 31144203031 is 13030244113.

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 31144203031 - 2³ = 31144203023 is a prime.

It is a super-2 number, since 2×31144203031² (a number of 22 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 = 31144202993 and 31144203011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144203011) 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, 2385150 + ... + 2398171.

It is an arithmetic number, because the mean of its divisors is an integer number (4132790208).

Almost surely, 2^31144203031 is an apocalyptic number.

31144203031 is a deficient number, since it is larger than the sum of its proper divisors (1918118633).

31144203031 is a wasteful number, since it uses less digits than its factorization.

31144203031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783721.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31144203031 its reverse (13030244113), we get a palindrome (44174447144).

The spelling of 31144203031 in words is "thirty-one billion, one hundred forty-four million, two hundred three thousand, thirty-one".