1312197570 has 192 divisors, whose sum is σ = 3775524480. Its totient is φ = 326965248.

The previous prime is 1312197569. The next prime is 1312197571. The reversal of 1312197570 is 757912131.

It is an interprime number because it is at equal distance from previous prime (1312197569) and next prime (1312197571).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1312197571) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4478344 + ... + 4478636.

It is an arithmetic number, because the mean of its divisors is an integer number (19664190).

Almost surely, 2^1312197570 is an apocalyptic number.

1312197570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312197570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1887762240).

1312197570 is an abundant number, since it is smaller than the sum of its proper divisors (2463326910).

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

1312197570 is a wasteful number, since it uses less digits than its factorization.

1312197570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 1312197570 is about 36224.2676944614. The cubic root of 1312197570 is about 1094.7956834026.

The spelling of 1312197570 in words is "one billion, three hundred twelve million, one hundred ninety-seven thousand, five hundred seventy".