1021313013 has 16 divisors (see below), whose sum is σ = 1557340800. Its totient is φ = 583212096.

The previous prime is 1021313009. The next prime is 1021313047. The reversal of 1021313013 is 3103131201.

It is not a de Polignac number, because 1021313013 - 2² = 1021313009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021312983 and 1021313001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021303013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16831 + ... + 48227.

It is an arithmetic number, because the mean of its divisors is an integer number (97333800).

Almost surely, 2^1021313013 is an apocalyptic number.

It is an amenable number.

1021313013 is a deficient number, since it is larger than the sum of its proper divisors (536027787).

1021313013 is a wasteful number, since it uses less digits than its factorization.

1021313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32956.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1021313013 is about 31957.9882502012. The cubic root of 1021313013 is about 1007.0544553046.

Adding to 1021313013 its reverse (3103131201), we get a palindrome (4124444214).

The spelling of 1021313013 in words is "one billion, twenty-one million, three hundred thirteen thousand, thirteen".