1345206312 has 128 divisors (see below), whose sum is σ = 3907584000. Its totient is φ = 428276160.

The previous prime is 1345206287. The next prime is 1345206341. The reversal of 1345206312 is 2136025431.

1345206312 is a `hidden beast` number, since 1 + 3 + 4 + 5 + 20 + 631 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 527713 + ... + 530255.

It is an arithmetic number, because the mean of its divisors is an integer number (30528000).

Almost surely, 2^1345206312 is an apocalyptic number.

1345206312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1345206312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1953792000).

1345206312 is an abundant number, since it is smaller than the sum of its proper divisors (2562377688).

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

1345206312 is a wasteful number, since it uses less digits than its factorization.

1345206312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668 (or 2658 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1345206312 is about 36677.0542982939. The cubic root of 1345206312 is about 1103.8997427860.

The spelling of 1345206312 in words is "one billion, three hundred forty-five million, two hundred six thousand, three hundred twelve".