1445231123 has 4 divisors (see below), whose sum is σ = 1651692720. Its totient is φ = 1238769528.

The previous prime is 1445231089. The next prime is 1445231167. The reversal of 1445231123 is 3211325441.

It is a happy number.

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 1445231123 - 2¹⁸ = 1444968979 is a prime.

It is a super-2 number, since 2×1445231123² = 4177385997775682258, 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 = 1445231092 and 1445231101.

It is not an unprimeable number, because it can be changed into a prime (1445231173) 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, 103230788 + ... + 103230801.

It is an arithmetic number, because the mean of its divisors is an integer number (412923180).

Almost surely, 2^1445231123 is an apocalyptic number.

1445231123 is a deficient number, since it is larger than the sum of its proper divisors (206461597).

1445231123 is an equidigital number, since it uses as much as digits as its factorization.

1445231123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206461596.

The product of its digits is 2880, while the sum is 26.

The square root of 1445231123 is about 38016.1955355872. The cubic root of 1445231123 is about 1130.6089919651.

Adding to 1445231123 its reverse (3211325441), we get a palindrome (4656556564).

The spelling of 1445231123 in words is "one billion, four hundred forty-five million, two hundred thirty-one thousand, one hundred twenty-three".