1012003256 has 64 divisors (see below), whose sum is σ = 2148271200. Its totient is φ = 442713600.

The previous prime is 1012003241. The next prime is 1012003259. The reversal of 1012003256 is 6523002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012003259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380266 + ... + 1380998.

Almost surely, 2^1012003256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012003256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1074135600).

1012003256 is an abundant number, since it is smaller than the sum of its proper divisors (1136267944).

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

1012003256 is a wasteful number, since it uses less digits than its factorization.

1012003256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1012003256 is about 31811.9986168741. The cubic root of 1012003256 is about 1003.9851825562.

Adding to 1012003256 its reverse (6523002101), we get a palindrome (7535005357).

The spelling of 1012003256 in words is "one billion, twelve million, three thousand, two hundred fifty-six".