31344031 has 2 divisors, whose sum is σ = 31344032. Its totient is φ = 31344030.

The previous prime is 31344029. The next prime is 31344043. The reversal of 31344031 is 13044313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31344031 - 2¹ = 31344029 is a prime.

It is a super-2 number, since 2×31344031² = 1964896558657922, which contains 22 as substring.

Together with 31344029, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31344011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672015 + 15672016.

It is an arithmetic number, because the mean of its divisors is an integer number (15672016).

Almost surely, 2^31344031 is an apocalyptic number.

31344031 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344031 is an equidigital number, since it uses as much as digits as its factorization.

31344031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 31344031 is about 5598.5740148720. The cubic root of 31344031 is about 315.2958704944.

Adding to 31344031 its reverse (13044313), we get a palindrome (44388344).

It can be divided in two parts, 313 and 44031, that added together give a palindrome (44344).

The spelling of 31344031 in words is "thirty-one million, three hundred forty-four thousand, thirty-one".