144773731 has 2 divisors, whose sum is σ = 144773732. Its totient is φ = 144773730.

The previous prime is 144773723. The next prime is 144773743. The reversal of 144773731 is 137377441.

It is a weak prime.

It is an emirp because it is prime and its reverse (137377441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144773731 - 2³ = 144773723 is a prime.

It is a super-2 number, since 2×144773731² = 41918866375320722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (144773701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72386865 + 72386866.

It is an arithmetic number, because the mean of its divisors is an integer number (72386866).

Almost surely, 2^144773731 is an apocalyptic number.

144773731 is a deficient number, since it is larger than the sum of its proper divisors (1).

144773731 is an equidigital number, since it uses as much as digits as its factorization.

144773731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 37.

The square root of 144773731 is about 12032.1956018010. The cubic root of 144773731 is about 525.0853750801.

The spelling of 144773731 in words is "one hundred forty-four million, seven hundred seventy-three thousand, seven hundred thirty-one".