1203340253 has 4 divisors (see below), whose sum is σ = 1216861020. Its totient is φ = 1189819488.

The previous prime is 1203340247. The next prime is 1203340339. The reversal of 1203340253 is 3520433021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3520433021 = 7 ⋅502919003.

It can be written as a sum of positive squares in 2 ways, for example, as 689955289 + 513384964 = 26267^2 + 22658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203340253 - 2¹² = 1203336157 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 (1203340213) 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, 6760250 + ... + 6760427.

It is an arithmetic number, because the mean of its divisors is an integer number (304215255).

Almost surely, 2^1203340253 is an apocalyptic number.

It is an amenable number.

1203340253 is a deficient number, since it is larger than the sum of its proper divisors (13520767).

1203340253 is an equidigital number, since it uses as much as digits as its factorization.

1203340253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13520766.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1203340253 is about 34689.1950468730. The cubic root of 1203340253 is about 1063.6436414370.

Adding to 1203340253 its reverse (3520433021), we get a palindrome (4723773274).

The spelling of 1203340253 in words is "one billion, two hundred three million, three hundred forty thousand, two hundred fifty-three".