1321310112 has 48 divisors (see below), whose sum is σ = 3470366592. Its totient is φ = 440192000.

The previous prime is 1321310101. The next prime is 1321310113. The reversal of 1321310112 is 2110131231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 1321310091 and 1321310100.

It is not an unprimeable number, because it can be changed into a prime (1321310113) 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, 275737 + ... + 280487.

It is an arithmetic number, because the mean of its divisors is an integer number (72299304).

Almost surely, 2^1321310112 is an apocalyptic number.

1321310112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1321310112 is an abundant number, since it is smaller than the sum of its proper divisors (2149056480).

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

1321310112 is a wasteful number, since it uses less digits than its factorization.

1321310112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7661 (or 7653 counting only the distinct ones).

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

The square root of 1321310112 is about 36349.8296007010. The cubic root of 1321310112 is about 1097.3241051783.

Adding to 1321310112 its reverse (2110131231), we get a palindrome (3431441343).

The spelling of 1321310112 in words is "one billion, three hundred twenty-one million, three hundred ten thousand, one hundred twelve".