1021312313 has 8 divisors (see below), whose sum is σ = 1167553920. Its totient is φ = 875155680.

The previous prime is 1021312297. The next prime is 1021312333. The reversal of 1021312313 is 3132131201.

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

It is not a de Polignac number, because 1021312313 - 2⁴ = 1021312297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021312291 and 1021312300.

It is not an unprimeable number, because it can be changed into a prime (1021312333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7028 + ... + 45738.

It is an arithmetic number, because the mean of its divisors is an integer number (145944240).

Almost surely, 2^1021312313 is an apocalyptic number.

It is an amenable number.

1021312313 is a deficient number, since it is larger than the sum of its proper divisors (146241607).

1021312313 is an equidigital number, since it uses as much as digits as its factorization.

1021312313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42487.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1021312313 is about 31957.9772983210. The cubic root of 1021312313 is about 1007.0542252288.

Adding to 1021312313 its reverse (3132131201), we get a palindrome (4153443514).

The spelling of 1021312313 in words is "one billion, twenty-one million, three hundred twelve thousand, three hundred thirteen".