1021023113 has 4 divisors (see below), whose sum is σ = 1113843408. Its totient is φ = 928202820.

The previous prime is 1021023109. The next prime is 1021023119. The reversal of 1021023113 is 3113201201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1021023113 - 2² = 1021023109 is a prime.

It is a super-3 number, since 3×1021023113³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021023119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46410131 + ... + 46410152.

It is an arithmetic number, because the mean of its divisors is an integer number (278460852).

Almost surely, 2^1021023113 is an apocalyptic number.

It is an amenable number.

1021023113 is a deficient number, since it is larger than the sum of its proper divisors (92820295).

1021023113 is an equidigital number, since it uses as much as digits as its factorization.

1021023113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92820294.

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

The square root of 1021023113 is about 31953.4522860989. The cubic root of 1021023113 is about 1006.9591620529.

Adding to 1021023113 its reverse (3113201201), we get a palindrome (4134224314).

The spelling of 1021023113 in words is "one billion, twenty-one million, twenty-three thousand, one hundred thirteen".