2031505653 has 8 divisors (see below), whose sum is σ = 2711853088. Its totient is φ = 1352747664.

The previous prime is 2031505649. The next prime is 2031505673. The reversal of 2031505653 is 3565051302.

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

It is not a de Polignac number, because 2031505653 - 2² = 2031505649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031505653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031505643) 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, 394375 + ... + 399492.

It is an arithmetic number, because the mean of its divisors is an integer number (338981636).

Almost surely, 2^2031505653 is an apocalyptic number.

It is an amenable number.

2031505653 is a deficient number, since it is larger than the sum of its proper divisors (680347435).

2031505653 is an equidigital number, since it uses as much as digits as its factorization.

2031505653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794723.

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 2031505653 is about 45072.2270694493. The cubic root of 2031505653 is about 1266.5023842881.

Adding to 2031505653 its reverse (3565051302), we get a palindrome (5596556955).

The spelling of 2031505653 in words is "two billion, thirty-one million, five hundred five thousand, six hundred fifty-three".