1240345312 has 24 divisors (see below), whose sum is σ = 2526136200. Its totient is φ = 598786944.

The previous prime is 1240345303. The next prime is 1240345321. The reversal of 1240345312 is 2135430421.

It is an interprime number because it is at equal distance from previous prime (1240345303) and next prime (1240345321).

It is a congruent number.

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, 667362 + ... + 669217.

It is an arithmetic number, because the mean of its divisors is an integer number (105255675).

Almost surely, 2^1240345312 is an apocalyptic number.

It is an amenable number.

1240345312 is an abundant number, since it is smaller than the sum of its proper divisors (1285790888).

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

1240345312 is a wasteful number, since it uses less digits than its factorization.

1240345312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336618 (or 1336610 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1240345312 is about 35218.5364829375. The cubic root of 1240345312 is about 1074.4367879382.

Adding to 1240345312 its reverse (2135430421), we get a palindrome (3375775733).

The spelling of 1240345312 in words is "one billion, two hundred forty million, three hundred forty-five thousand, three hundred twelve".