1231464256 has 28 divisors (see below), whose sum is σ = 2665841760. Its totient is φ = 559756160.

The previous prime is 1231464251. The next prime is 1231464259. The reversal of 1231464256 is 6524641321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231464251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873916 + ... + 875323.

Almost surely, 2^1231464256 is an apocalyptic number.

1231464256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1231464256 is an abundant number, since it is smaller than the sum of its proper divisors (1434377504).

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

1231464256 is a wasteful number, since it uses less digits than its factorization.

1231464256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749262 (or 1749252 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 1231464256 is about 35092.2250078276. The cubic root of 1231464256 is about 1071.8662675679.

The spelling of 1231464256 in words is "one billion, two hundred thirty-one million, four hundred sixty-four thousand, two hundred fifty-six".