1000312240 has 20 divisors (see below), whose sum is σ = 2325726144. Its totient is φ = 400124864.

The previous prime is 1000312237. The next prime is 1000312241. The reversal of 1000312240 is 422130001.

1000312240 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1000312240.

It is not an unprimeable number, because it can be changed into a prime (1000312241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6251872 + ... + 6252031.

Almost surely, 2^1000312240 is an apocalyptic number.

1000312240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000312240 is an abundant number, since it is smaller than the sum of its proper divisors (1325413904).

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

1000312240 is a wasteful number, since it uses less digits than its factorization.

1000312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12503916 (or 12503910 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1000312240 is about 31627.7131642488. The cubic root of 1000312240 is about 1000.1040691692.

Adding to 1000312240 its reverse (422130001), we get a palindrome (1422442241).

The spelling of 1000312240 in words is "one billion, three hundred twelve thousand, two hundred forty".