1305235320012 has 72 divisors (see below), whose sum is σ = 3762148886496. Its totient is φ = 377986696704.

The previous prime is 1305235319917. The next prime is 1305235320013. The reversal of 1305235320012 is 2100235325031.

It is a happy number.

1305235320012 is a `hidden beast` number, since 1 + 305 + 2 + 35 + 320 + 0 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (1305235320013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82020408 + ... + 82036319.

It is an arithmetic number, because the mean of its divisors is an integer number (52252067868).

Almost surely, 2^{1305235320012} is an apocalyptic number.

1305235320012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305235320012 is an abundant number, since it is smaller than the sum of its proper divisors (2456913566484).

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

1305235320012 is a wasteful number, since it uses less digits than its factorization.

1305235320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164056767 (or 164056762 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The spelling of 1305235320012 in words is "one trillion, three hundred five billion, two hundred thirty-five million, three hundred twenty thousand, twelve".