312245011240 has 64 divisors (see below), whose sum is σ = 740537884800. Its totient is φ = 118162789632.

The previous prime is 312245011223. The next prime is 312245011249. The reversal of 312245011240 is 42110542213.

It is not an unprimeable number, because it can be changed into a prime (312245011249) 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, 276829 + ... + 837331.

It is an arithmetic number, because the mean of its divisors is an integer number (11570904450).

Almost surely, 2^312245011240 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 312245011240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370268942400).

312245011240 is an abundant number, since it is smaller than the sum of its proper divisors (428292873560).

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

312245011240 is a wasteful number, since it uses less digits than its factorization.

312245011240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561266 (or 561262 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 312245011240 its reverse (42110542213), we get a palindrome (354355553453).

The spelling of 312245011240 in words is "three hundred twelve billion, two hundred forty-five million, eleven thousand, two hundred forty".