1231748256 has 48 divisors (see below), whose sum is σ = 3373925184. Its totient is φ = 392730624.

The previous prime is 1231748239. The next prime is 1231748339. The reversal of 1231748256 is 6528471321.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276721 + ... + 281136.

It is an arithmetic number, because the mean of its divisors is an integer number (70290108).

Almost surely, 2^1231748256 is an apocalyptic number.

1231748256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1231748256 is an abundant number, since it is smaller than the sum of its proper divisors (2142176928).

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

1231748256 is a wasteful number, since it uses less digits than its factorization.

1231748256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557893 (or 557885 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1231748256 is about 35096.2712549353. The cubic root of 1231748256 is about 1071.9486590842.

The spelling of 1231748256 in words is "one billion, two hundred thirty-one million, seven hundred forty-eight thousand, two hundred fifty-six".