1445231101 has 4 divisors (see below), whose sum is σ = 1453585212. Its totient is φ = 1436876992.

The previous prime is 1445231089. The next prime is 1445231167. The reversal of 1445231101 is 1011325441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1377152100 + 68079001 = 37110^2 + 8251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445231101 - 2⁵ = 1445231069 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 (1445231201) 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, 4176796 + ... + 4177141.

It is an arithmetic number, because the mean of its divisors is an integer number (363396303).

Almost surely, 2^1445231101 is an apocalyptic number.

It is an amenable number.

1445231101 is a deficient number, since it is larger than the sum of its proper divisors (8354111).

1445231101 is an equidigital number, since it uses as much as digits as its factorization.

1445231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8354110.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1445231101 is about 38016.1952462368. The cubic root of 1445231101 is about 1130.6089862282.

Adding to 1445231101 its reverse (1011325441), we get a palindrome (2456556542).

The spelling of 1445231101 in words is "one billion, four hundred forty-five million, two hundred thirty-one thousand, one hundred one".