1021302113 has 8 divisors (see below), whose sum is σ = 1106871528. Its totient is φ = 936733824.

The previous prime is 1021302109. The next prime is 1021302131. The reversal of 1021302113 is 3112031201.

It can be written as a sum of positive squares in 4 ways, for example, as 8025889 + 1013276224 = 2833^2 + 31832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021302113 - 2² = 1021302109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021302133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248156 + ... + 252237.

It is an arithmetic number, because the mean of its divisors is an integer number (138358941).

Almost surely, 2^1021302113 is an apocalyptic number.

1021302113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1021302113 is a deficient number, since it is larger than the sum of its proper divisors (85569415).

1021302113 is a wasteful number, since it uses less digits than its factorization.

1021302113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500563.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1021302113 is about 31957.8177133546. The cubic root of 1021302113 is about 1007.0508726835.

Adding to 1021302113 its reverse (3112031201), we get a palindrome (4133333314).

The spelling of 1021302113 in words is "one billion, twenty-one million, three hundred two thousand, one hundred thirteen".