1243343970 has 288 divisors, whose sum is σ = 3824271360. Its totient is φ = 279417600.

The previous prime is 1243343953. The next prime is 1243343987. The reversal of 1243343970 is 793433421.

1243343970 is a `hidden beast` number, since 1 + 243 + 343 + 9 + 70 = 666.

It is an interprime number because it is at equal distance from previous prime (1243343953) and next prime (1243343987).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 9790047 + ... + 9790173.

It is an arithmetic number, because the mean of its divisors is an integer number (13278720).

Almost surely, 2^1243343970 is an apocalyptic number.

1243343970 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 1243343970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912135680).

1243343970 is an abundant number, since it is smaller than the sum of its proper divisors (2580927390).

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

1243343970 is a wasteful number, since it uses less digits than its factorization.

1243343970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 1243343970 is about 35261.0829385599. The cubic root of 1243343970 is about 1075.3019436666.

The spelling of 1243343970 in words is "one billion, two hundred forty-three million, three hundred forty-three thousand, nine hundred seventy".