144431231002 has 4 divisors (see below), whose sum is σ = 216646846506. Its totient is φ = 72215615500.

The previous prime is 144431230987. The next prime is 144431231047. The reversal of 144431231002 is 200132134441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200132134441 = 7321 ⋅27336721.

It can be written as a sum of positive squares in only one way, i.e., 98520026641 + 45911204361 = 313879^2 + 214269^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36107807749 + ... + 36107807752.

Almost surely, 2^144431231002 is an apocalyptic number.

144431231002 is a deficient number, since it is larger than the sum of its proper divisors (72215615504).

144431231002 is an equidigital number, since it uses as much as digits as its factorization.

144431231002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72215615503.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 144431231002 its reverse (200132134441), we get a palindrome (344563365443).

The spelling of 144431231002 in words is "one hundred forty-four billion, four hundred thirty-one million, two hundred thirty-one thousand, two".