2268621531 has 18 divisors (see below), whose sum is σ = 3575544492. Its totient is φ = 1374634920.

The previous prime is 2268621503. The next prime is 2268621539. The reversal of 2268621531 is 1351268622.

2268621531 is a `hidden beast` number, since 2 + 2 + 68 + 62 + 1 + 531 = 666.

It is not a de Polignac number, because 2268621531 - 2¹³ = 2268613339 is a prime.

It is a super-2 number, since 2×2268621531² = 10293287301833567922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2268621539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 471520 + ... + 476306.

Almost surely, 2^2268621531 is an apocalyptic number.

2268621531 is a deficient number, since it is larger than the sum of its proper divisors (1306922961).

2268621531 is an frugal number, since it uses more digits than its factorization.

2268621531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591 (or 4801 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 2268621531 is about 47630.0486142939. The cubic root of 2268621531 is about 1313.9757489460.

The spelling of 2268621531 in words is "two billion, two hundred sixty-eight million, six hundred twenty-one thousand, five hundred thirty-one".