2131563533 has 8 divisors (see below), whose sum is σ = 2325676320. Its totient is φ = 1937506480.

The previous prime is 2131563521. The next prime is 2131563557. The reversal of 2131563533 is 3353651312.

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 2131563533 - 2⁴ = 2131563517 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2131563533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131566533) 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, 140966 + ... + 155352.

It is an arithmetic number, because the mean of its divisors is an integer number (290709540).

Almost surely, 2^2131563533 is an apocalyptic number.

It is an amenable number.

2131563533 is a deficient number, since it is larger than the sum of its proper divisors (194112787).

2131563533 is a wasteful number, since it uses less digits than its factorization.

2131563533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27867.

The product of its digits is 24300, while the sum is 32.

The square root of 2131563533 is about 46168.8589094424. The cubic root of 2131563533 is about 1286.9630969391.

It can be divided in two parts, 21315 and 63533, that added together give a palindrome (84848).

The spelling of 2131563533 in words is "two billion, one hundred thirty-one million, five hundred sixty-three thousand, five hundred thirty-three".