1355105203 has 4 divisors (see below), whose sum is σ = 1357039008. Its totient is φ = 1353171400.

The previous prime is 1355105197. The next prime is 1355105209. The reversal of 1355105203 is 3025015531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3025015531 = 971 ⋅3115361.

It is an interprime number because it is at equal distance from previous prime (1355105197) and next prime (1355105209).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355105203 is a prime.

It is a super-2 number, since 2×1355105203² = 3672620222395342418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355105209) 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, 965851 + ... + 967252.

It is an arithmetic number, because the mean of its divisors is an integer number (339259752).

Almost surely, 2^1355105203 is an apocalyptic number.

1355105203 is a deficient number, since it is larger than the sum of its proper divisors (1933805).

1355105203 is an equidigital number, since it uses as much as digits as its factorization.

1355105203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933804.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1355105203 is about 36811.7535985451. The cubic root of 1355105203 is about 1106.6008622124.

The spelling of 1355105203 in words is "one billion, three hundred fifty-five million, one hundred five thousand, two hundred three".