2311255520 has 72 divisors (see below), whose sum is σ = 6351846984. Its totient is φ = 792427776.

The previous prime is 2311255501. The next prime is 2311255523. The reversal of 2311255520 is 255521132.

It is a self number, because there is not a number n which added to its sum of digits gives 2311255520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311255523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139562 + ... + 155241.

It is an arithmetic number, because the mean of its divisors is an integer number (88220097).

Almost surely, 2^2311255520 is an apocalyptic number.

2311255520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311255520 is an abundant number, since it is smaller than the sum of its proper divisors (4040591464).

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

2311255520 is a wasteful number, since it uses less digits than its factorization.

2311255520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294832 (or 294817 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2311255520 is about 48075.5189259565. The cubic root of 2311255520 is about 1322.1558587735.

Adding to 2311255520 its reverse (255521132), we get a palindrome (2566776652).

The spelling of 2311255520 in words is "two billion, three hundred eleven million, two hundred fifty-five thousand, five hundred twenty".