144730631 has 4 divisors (see below), whose sum is σ = 145689264. Its totient is φ = 143772000.

The previous prime is 144730609. The next prime is 144730633. The reversal of 144730631 is 136037441.

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

It is a cyclic number.

It is not a de Polignac number, because 144730631 - 2⁶ = 144730567 is a prime.

It is a super-2 number, since 2×144730631² = 41893911099316322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144730594 and 144730603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144730633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479090 + ... + 479391.

It is an arithmetic number, because the mean of its divisors is an integer number (36422316).

Almost surely, 2^144730631 is an apocalyptic number.

144730631 is a deficient number, since it is larger than the sum of its proper divisors (958633).

144730631 is an equidigital number, since it uses as much as digits as its factorization.

144730631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958632.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 144730631 is about 12030.4044404168. The cubic root of 144730631 is about 525.0332628963.

The spelling of 144730631 in words is "one hundred forty-four million, seven hundred thirty thousand, six hundred thirty-one".