1312823856240 has 480 divisors, whose sum is σ = 5041265838336. Its totient is φ = 303305195520.

The previous prime is 1312823856217. The next prime is 1312823856269. The reversal of 1312823856240 is 426583282131.

1312823856240 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 82 + 3 + 8 + 562 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 58385800 + ... + 58408280.

Almost surely, 2^{1312823856240} is an apocalyptic number.

1312823856240 is a gapful number since it is divisible by the number (10) 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 1312823856240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2520632919168).

1312823856240 is an abundant number, since it is smaller than the sum of its proper divisors (3728441982096).

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

1312823856240 is a wasteful number, since it uses less digits than its factorization.

1312823856240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22897 (or 22888 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 1312823856240 in words is "one trillion, three hundred twelve billion, eight hundred twenty-three million, eight hundred fifty-six thousand, two hundred forty".