1313021445 has 16 divisors (see below), whose sum is σ = 2132191680. Its totient is φ = 689825664.

The previous prime is 1313021419. The next prime is 1313021471. The reversal of 1313021445 is 5441203131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1313021419) and next prime (1313021471).

It is not a de Polignac number, because 1313021445 - 2⁸ = 1313021189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652240 + ... + 654249.

It is an arithmetic number, because the mean of its divisors is an integer number (133261980).

Almost surely, 2^1313021445 is an apocalyptic number.

1313021445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313021445 is a deficient number, since it is larger than the sum of its proper divisors (819170235).

1313021445 is a wasteful number, since it uses less digits than its factorization.

1313021445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306564.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1313021445 is about 36235.6377755380. The cubic root of 1313021445 is about 1095.0247612257.

Adding to 1313021445 its reverse (5441203131), we get a palindrome (6754224576).

The spelling of 1313021445 in words is "one billion, three hundred thirteen million, twenty-one thousand, four hundred forty-five".