1021316308 has 12 divisors (see below), whose sum is σ = 1790448660. Its totient is φ = 509759552.

The previous prime is 1021316299. The next prime is 1021316323. The reversal of 1021316308 is 8036131201.

It can be written as a sum of positive squares in 2 ways, for example, as 628404624 + 392911684 = 25068^2 + 19822^2 .

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 3 ways as a sum of consecutive naturals, for example, 222091 + ... + 226642.

It is an arithmetic number, because the mean of its divisors is an integer number (149204055).

Almost surely, 2^1021316308 is an apocalyptic number.

It is an amenable number.

1021316308 is a deficient number, since it is larger than the sum of its proper divisors (769132352).

1021316308 is a wasteful number, since it uses less digits than its factorization.

1021316308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449306 (or 449304 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1021316308 is about 31958.0398022157. The cubic root of 1021316308 is about 1007.0555383029.

Adding to 1021316308 its reverse (8036131201), we get a palindrome (9057447509).

The spelling of 1021316308 in words is "one billion, twenty-one million, three hundred sixteen thousand, three hundred eight".