203115143420253 has 20 divisors (see below), whose sum is σ = 303419303934780. Its totient is φ = 135409923355392.

The previous prime is 203115143420221. The next prime is 203115143420281. The reversal of 203115143420253 is 352024341511302.

203115143420253 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 15 + 1 + 434 + 202 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 196034637530169 + 7080505890084 = 14001237^2 + 2660922^2 .

It is not a de Polignac number, because 203115143420253 - 2⁵ = 203115143420221 is a prime.

It is a super-2 number, since 2×203115143420253² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203115143420053) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112851963 + ... + 114637671.

It is an arithmetic number, because the mean of its divisors is an integer number (15170965196739).

Almost surely, 2^{203115143420253} is an apocalyptic number.

It is an amenable number.

203115143420253 is a deficient number, since it is larger than the sum of its proper divisors (100304160514527).

203115143420253 is a wasteful number, since it uses less digits than its factorization.

203115143420253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189978 (or 3189969 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 203115143420253 its reverse (352024341511302), we get a palindrome (555139484931555).

The spelling of 203115143420253 in words is "two hundred three trillion, one hundred fifteen billion, one hundred forty-three million, four hundred twenty thousand, two hundred fifty-three".