31144134031 has 4 divisors (see below), whose sum is σ = 32783299000. Its totient is φ = 29504969064.

The previous prime is 31144134017. The next prime is 31144134071. The reversal of 31144134031 is 13043144113.

It is a happy number.

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 31144134031 - 2⁷ = 31144133903 is a prime.

It is a super-2 number, since 2×31144134031² (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 = 31144133987 and 31144134005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144134071) 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 3 ways as a sum of consecutive naturals, for example, 819582456 + ... + 819582493.

It is an arithmetic number, because the mean of its divisors is an integer number (8195824750).

Almost surely, 2^31144134031 is an apocalyptic number.

31144134031 is a deficient number, since it is larger than the sum of its proper divisors (1639164969).

31144134031 is a wasteful number, since it uses less digits than its factorization.

31144134031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639164968.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 31144134031 its reverse (13043144113), we get a palindrome (44187278144).

The spelling of 31144134031 in words is "thirty-one billion, one hundred forty-four million, one hundred thirty-four thousand, thirty-one".