144213931 has 2 divisors, whose sum is σ = 144213932. Its totient is φ = 144213930.

The previous prime is 144213929. The next prime is 144213973. The reversal of 144213931 is 139312441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144213931 - 2¹ = 144213929 is a prime.

It is a super-2 number, since 2×144213931² = 41595315788945522, which contains 22 as substring.

Together with 144213929, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 144213931.

It is not a weakly prime, because it can be changed into another prime (144213991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72106965 + 72106966.

It is an arithmetic number, because the mean of its divisors is an integer number (72106966).

Almost surely, 2^144213931 is an apocalyptic number.

144213931 is a deficient number, since it is larger than the sum of its proper divisors (1).

144213931 is an equidigital number, since it uses as much as digits as its factorization.

144213931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 144213931 is about 12008.9104834702. The cubic root of 144213931 is about 524.4077142179.

The spelling of 144213931 in words is "one hundred forty-four million, two hundred thirteen thousand, nine hundred thirty-one".