1243309696 has 32 divisors (see below), whose sum is σ = 2478502080. Its totient is φ = 621254400.

The previous prime is 1243309681. The next prime is 1243309703. The reversal of 1243309696 is 6969033421.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1243309696² = 3091638000335224832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363225 + ... + 366631.

It is an arithmetic number, because the mean of its divisors is an integer number (77453190).

Almost surely, 2^1243309696 is an apocalyptic number.

1243309696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1243309696 is a deficient number, since it is larger than the sum of its proper divisors (1235192384).

1243309696 is an equidigital number, since it uses as much as digits as its factorization.

1243309696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6272 (or 6260 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 1243309696 is about 35260.5969319863. The cubic root of 1243309696 is about 1075.2920629905.

The spelling of 1243309696 in words is "one billion, two hundred forty-three million, three hundred nine thousand, six hundred ninety-six".