144953931 has 4 divisors (see below), whose sum is σ = 193271912. Its totient is φ = 96635952.

The previous prime is 144953929. The next prime is 144953947. The reversal of 144953931 is 139359441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 144953931 - 2¹ = 144953929 is a prime.

It is a super-2 number, since 2×144953931² = 42023284224705522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144953931.

It is not an unprimeable number, because it can be changed into a prime (144953971) 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 in 3 ways as a sum of consecutive naturals, for example, 24158986 + ... + 24158991.

It is an arithmetic number, because the mean of its divisors is an integer number (48317978).

Almost surely, 2^144953931 is an apocalyptic number.

144953931 is a deficient number, since it is larger than the sum of its proper divisors (48317981).

144953931 is an equidigital number, since it uses as much as digits as its factorization.

144953931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48317980.

The product of its digits is 58320, while the sum is 39.

The square root of 144953931 is about 12039.6815157213. The cubic root of 144953931 is about 525.3031428409.

The spelling of 144953931 in words is "one hundred forty-four million, nine hundred fifty-three thousand, nine hundred thirty-one".