31244119 has 2 divisors, whose sum is σ = 31244120. Its totient is φ = 31244118.

The previous prime is 31244117. The next prime is 31244141. The reversal of 31244119 is 91144213.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91144213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31244119 - 2¹ = 31244117 is a prime.

It is a super-2 number, since 2×31244119² = 1952389944172322, which contains 22 as substring.

Together with 31244117, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31244093 and 31244102.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31244117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622059 + 15622060.

It is an arithmetic number, because the mean of its divisors is an integer number (15622060).

Almost surely, 2^31244119 is an apocalyptic number.

31244119 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244119 is an equidigital number, since it uses as much as digits as its factorization.

31244119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 31244119 is about 5589.6439063683. The cubic root of 31244119 is about 314.9605023122.

The spelling of 31244119 in words is "thirty-one million, two hundred forty-four thousand, one hundred nineteen".