144672331 has 4 divisors (see below), whose sum is σ = 148582432. Its totient is φ = 140762232.

The previous prime is 144672317. The next prime is 144672337. The reversal of 144672331 is 133276441.

144672331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 144672331 - 2²¹ = 142575179 is a prime.

It is a super-2 number, since 2×144672331² = 41860166713947122, 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 = 144672293 and 144672302.

It is not an unprimeable number, because it can be changed into a prime (144672337) 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, 1954995 + ... + 1955068.

It is an arithmetic number, because the mean of its divisors is an integer number (37145608).

Almost surely, 2^144672331 is an apocalyptic number.

144672331 is a deficient number, since it is larger than the sum of its proper divisors (3910101).

144672331 is an equidigital number, since it uses as much as digits as its factorization.

144672331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910100.

The product of its digits is 12096, while the sum is 31.

The square root of 144672331 is about 12027.9811689244. The cubic root of 144672331 is about 524.9627559369.

The spelling of 144672331 in words is "one hundred forty-four million, six hundred seventy-two thousand, three hundred thirty-one".