10203135253 has 4 divisors (see below), whose sum is σ = 10259506348. Its totient is φ = 10146764160.

The previous prime is 10203135251. The next prime is 10203135287. The reversal of 10203135253 is 35253130201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35253130201 = 307 ⋅114831043.

It can be written as a sum of positive squares in 2 ways, for example, as 890306244 + 9312829009 = 29838^2 + 96503^2 .

It is a cyclic number.

It is not a de Polignac number, because 10203135253 - 2¹ = 10203135251 is a prime.

It is a super-2 number, since 2×10203135253² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203135251) 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, 28185276 + ... + 28185637.

It is an arithmetic number, because the mean of its divisors is an integer number (2564876587).

Almost surely, 2^10203135253 is an apocalyptic number.

It is an amenable number.

10203135253 is a deficient number, since it is larger than the sum of its proper divisors (56371095).

10203135253 is an equidigital number, since it uses as much as digits as its factorization.

10203135253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56371094.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 10203135253 its reverse (35253130201), we get a palindrome (45456265454).

The spelling of 10203135253 in words is "ten billion, two hundred three million, one hundred thirty-five thousand, two hundred fifty-three".