1021123313 has 8 divisors (see below), whose sum is σ = 1167904128. Its totient is φ = 874569024.

The previous prime is 1021123211. The next prime is 1021123333. The reversal of 1021123313 is 3133211201.

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

It is not a de Polignac number, because 1021123313 - 2²² = 1016929009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021123291 and 1021123300.

It is not an unprimeable number, because it can be changed into a prime (1021123333) 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, 46856 + ... + 65097.

It is an arithmetic number, because the mean of its divisors is an integer number (145988016).

Almost surely, 2^1021123313 is an apocalyptic number.

It is an amenable number.

1021123313 is a deficient number, since it is larger than the sum of its proper divisors (146780815).

1021123313 is a wasteful number, since it uses less digits than its factorization.

1021123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113263.

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

The square root of 1021123313 is about 31955.0201533343. The cubic root of 1021123313 is about 1006.9921009115.

Adding to 1021123313 its reverse (3133211201), we get a palindrome (4154334514).

The spelling of 1021123313 in words is "one billion, twenty-one million, one hundred twenty-three thousand, three hundred thirteen".