2031603493 has 4 divisors (see below), whose sum is σ = 2031776128. Its totient is φ = 2031430860.

The previous prime is 2031603491. The next prime is 2031603503. The reversal of 2031603493 is 3943061302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2031603493 - 2¹ = 2031603491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031603491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67263 + ... + 92668.

It is an arithmetic number, because the mean of its divisors is an integer number (507944032).

Almost surely, 2^2031603493 is an apocalyptic number.

It is an amenable number.

2031603493 is a deficient number, since it is larger than the sum of its proper divisors (172635).

2031603493 is a wasteful number, since it uses less digits than its factorization.

2031603493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172634.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 2031603493 is about 45073.3124254253. The cubic root of 2031603493 is about 1266.5227161052.

Adding to 2031603493 its reverse (3943061302), we get a palindrome (5974664795).

The spelling of 2031603493 in words is "two billion, thirty-one million, six hundred three thousand, four hundred ninety-three".