653381203 has 4 divisors (see below), whose sum is σ = 674458048. Its totient is φ = 632304360.

The previous prime is 653381167. The next prime is 653381243. The reversal of 653381203 is 302183356.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 653381203 - 2¹³ = 653373011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 21076813 = 653381203 / (6 + 5 + 3 + 3 + 8 + 1 + 2 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (653381243) 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 3 ways as a sum of consecutive naturals, for example, 10538376 + ... + 10538437.

It is an arithmetic number, because the mean of its divisors is an integer number (168614512).

Almost surely, 2^653381203 is an apocalyptic number.

653381203 is a deficient number, since it is larger than the sum of its proper divisors (21076845).

653381203 is a wasteful number, since it uses less digits than its factorization.

653381203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21076844.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 653381203 is about 25561.3224031935. The cubic root of 653381203 is about 867.7385239401.

The spelling of 653381203 in words is "six hundred fifty-three million, three hundred eighty-one thousand, two hundred three".