2231513533 has 2 divisors, whose sum is σ = 2231513534. Its totient is φ = 2231513532.

The previous prime is 2231513527. The next prime is 2231513561. The reversal of 2231513533 is 3353151322.

It is an a-pointer prime, because the next prime (2231513561) can be obtained adding 2231513533 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2086479684 + 145033849 = 45678^2 + 12043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231513533 is a prime.

It is a super-3 number, since 3×2231513533³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231513503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115756766 + 1115756767.

It is an arithmetic number, because the mean of its divisors is an integer number (1115756767).

Almost surely, 2^2231513533 is an apocalyptic number.

It is an amenable number.

2231513533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231513533 is an equidigital number, since it uses as much as digits as its factorization.

2231513533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 28.

The square root of 2231513533 is about 47238.8985159476. The cubic root of 2231513533 is about 1306.7720641228.

Adding to 2231513533 its reverse (3353151322), we get a palindrome (5584664855).

The spelling of 2231513533 in words is "two billion, two hundred thirty-one million, five hundred thirteen thousand, five hundred thirty-three".