1023311112 has 32 divisors (see below), whose sum is σ = 2600220480. Its totient is φ = 335511360.

The previous prime is 1023311071. The next prime is 1023311123. The reversal of 1023311112 is 2111133201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1023311091 and 1023311100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348028 + ... + 350955.

It is an arithmetic number, because the mean of its divisors is an integer number (81256890).

Almost surely, 2^1023311112 is an apocalyptic number.

1023311112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1023311112 is an abundant number, since it is smaller than the sum of its proper divisors (1576909368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023311112 is a wasteful number, since it uses less digits than its factorization.

1023311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699053 (or 699049 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1023311112 is about 31989.2343140626. The cubic root of 1023311112 is about 1007.7107619994.

Adding to 1023311112 its reverse (2111133201), we get a palindrome (3134444313).

The spelling of 1023311112 in words is "one billion, twenty-three million, three hundred eleven thousand, one hundred twelve".