113203251053 has 4 divisors (see below), whose sum is σ = 114567145728. Its totient is φ = 111839356380.

The previous prime is 113203251047. The next prime is 113203251067. The reversal of 113203251053 is 350152302311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 350152302311 = 7 ⋅50021757473.

It is a cyclic number.

It is not a de Polignac number, because 113203251053 - 2⁴ = 113203251037 is a prime.

It is a super-4 number, since 4×113203251053⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113203251013) 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, 681947213 + ... + 681947378.

It is an arithmetic number, because the mean of its divisors is an integer number (28641786432).

Almost surely, 2^113203251053 is an apocalyptic number.

It is an amenable number.

113203251053 is a deficient number, since it is larger than the sum of its proper divisors (1363894675).

113203251053 is an equidigital number, since it uses as much as digits as its factorization.

113203251053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363894674.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 113203251053 its reverse (350152302311), we get a palindrome (463355553364).

The spelling of 113203251053 in words is "one hundred thirteen billion, two hundred three million, two hundred fifty-one thousand, fifty-three".