144999731 has 2 divisors, whose sum is σ = 144999732. Its totient is φ = 144999730.

The previous prime is 144999721. The next prime is 144999733. The reversal of 144999731 is 137999441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144999731 - 2⁶ = 144999667 is a prime.

It is a super-2 number, since 2×144999731² = 42049843980144722, which contains 22 as substring.

Together with 144999733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144999733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72499865 + 72499866.

It is an arithmetic number, because the mean of its divisors is an integer number (72499866).

Almost surely, 2^144999731 is an apocalyptic number.

144999731 is a deficient number, since it is larger than the sum of its proper divisors (1).

144999731 is an equidigital number, since it uses as much as digits as its factorization.

144999731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 47.

The square root of 144999731 is about 12041.5834091701. The cubic root of 144999731 is about 525.3584623720.

The spelling of 144999731 in words is "one hundred forty-four million, nine hundred ninety-nine thousand, seven hundred thirty-one".