1011355203 has 4 divisors (see below), whose sum is σ = 1348473608. Its totient is φ = 674236800.

The previous prime is 1011355157. The next prime is 1011355207. The reversal of 1011355203 is 3025531101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1011355203 - 2⁸ = 1011354947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011355203.

It is not an unprimeable number, because it can be changed into a prime (1011355207) 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, 168559198 + ... + 168559203.

It is an arithmetic number, because the mean of its divisors is an integer number (337118402).

Almost surely, 2^1011355203 is an apocalyptic number.

1011355203 is a deficient number, since it is larger than the sum of its proper divisors (337118405).

1011355203 is an equidigital number, since it uses as much as digits as its factorization.

1011355203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337118404.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1011355203 is about 31801.8113163386. The cubic root of 1011355203 is about 1003.7708306303.

Adding to 1011355203 its reverse (3025531101), we get a palindrome (4036886304).

The spelling of 1011355203 in words is "one billion, eleven million, three hundred fifty-five thousand, two hundred three".