2113251563 has 8 divisors (see below), whose sum is σ = 2165029776. Its totient is φ = 2061914400.

The previous prime is 2113251541. The next prime is 2113251587. The reversal of 2113251563 is 3651523112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2113251563 - 2¹² = 2113247467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113251863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100553 + ... + 119738.

It is an arithmetic number, because the mean of its divisors is an integer number (270628722).

Almost surely, 2^2113251563 is an apocalyptic number.

2113251563 is a deficient number, since it is larger than the sum of its proper divisors (51778213).

2113251563 is a wasteful number, since it uses less digits than its factorization.

2113251563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220525.

The product of its digits is 5400, while the sum is 29.

The square root of 2113251563 is about 45970.1159776653. The cubic root of 2113251563 is about 1283.2671182717.

Adding to 2113251563 its reverse (3651523112), we get a palindrome (5764774675).

The spelling of 2113251563 in words is "two billion, one hundred thirteen million, two hundred fifty-one thousand, five hundred sixty-three".