1445323131 has 48 divisors (see below), whose sum is σ = 2438092800. Its totient is φ = 808030080.

The previous prime is 1445323111. The next prime is 1445323207. The reversal of 1445323131 is 1313235441.

It is a happy number.

It is not a de Polignac number, because 1445323131 - 2¹¹ = 1445321083 is a prime.

It is a super-2 number, since 2×1445323131² = 4177917906007286322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1445323095 and 1445323104.

It is not an unprimeable number, because it can be changed into a prime (1445323111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 601270 + ... + 603668.

It is an arithmetic number, because the mean of its divisors is an integer number (50793600).

Almost surely, 2^1445323131 is an apocalyptic number.

1445323131 is a deficient number, since it is larger than the sum of its proper divisors (992769669).

1445323131 is a wasteful number, since it uses less digits than its factorization.

1445323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2613 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1445323131 is about 38017.4056321575. The cubic root of 1445323131 is about 1130.6329841748.

Adding to 1445323131 its reverse (1313235441), we get a palindrome (2758558572).

The spelling of 1445323131 in words is "one billion, four hundred forty-five million, three hundred twenty-three thousand, one hundred thirty-one".