144731613 has 16 divisors (see below), whose sum is σ = 209463296. Its totient is φ = 88361280.

The previous prime is 144731611. The next prime is 144731621. The reversal of 144731613 is 316137441.

144731613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144731613 - 2¹ = 144731611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144731611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9658 + ... + 19563.

It is an arithmetic number, because the mean of its divisors is an integer number (13091456).

Almost surely, 2^144731613 is an apocalyptic number.

144731613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

144731613 is a deficient number, since it is larger than the sum of its proper divisors (64731683).

144731613 is a wasteful number, since it uses less digits than its factorization.

144731613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29364.

The product of its digits is 6048, while the sum is 30.

The square root of 144731613 is about 12030.4452536055. The cubic root of 144731613 is about 525.0344503470.

The spelling of 144731613 in words is "one hundred forty-four million, seven hundred thirty-one thousand, six hundred thirteen".