2312221240 has 64 divisors (see below), whose sum is σ = 6090759360. Its totient is φ = 773422080.

The previous prime is 2312221237. The next prime is 2312221277. The reversal of 2312221240 is 421222132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89227 + ... + 112186.

It is an arithmetic number, because the mean of its divisors is an integer number (95168115).

Almost surely, 2^2312221240 is an apocalyptic number.

2312221240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2312221240 is an abundant number, since it is smaller than the sum of its proper divisors (3778538120).

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

2312221240 is a wasteful number, since it uses less digits than its factorization.

2312221240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201472 (or 201468 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2312221240 is about 48085.5616583606. The cubic root of 2312221240 is about 1322.3399801384.

Adding to 2312221240 its reverse (421222132), we get a palindrome (2733443372).

The spelling of 2312221240 in words is "two billion, three hundred twelve million, two hundred twenty-one thousand, two hundred forty".