1020102313 has 4 divisors (see below), whose sum is σ = 1020715920. Its totient is φ = 1019488708.

The previous prime is 1020102311. The next prime is 1020102353. The reversal of 1020102313 is 3132010201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3132010201 = 23357 ⋅134093.

It is a cyclic number.

It is not a de Polignac number, because 1020102313 - 2¹ = 1020102311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020102293 and 1020102302.

It is not an unprimeable number, because it can be changed into a prime (1020102311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304303 + ... + 307636.

It is an arithmetic number, because the mean of its divisors is an integer number (255178980).

Almost surely, 2^1020102313 is an apocalyptic number.

It is an amenable number.

1020102313 is a deficient number, since it is larger than the sum of its proper divisors (613607).

1020102313 is an equidigital number, since it uses as much as digits as its factorization.

1020102313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613606.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1020102313 is about 31939.0405773248. The cubic root of 1020102313 is about 1006.6563654902.

Adding to 1020102313 its reverse (3132010201), we get a palindrome (4152112514).

The spelling of 1020102313 in words is "one billion, twenty million, one hundred two thousand, three hundred thirteen".