1011203013 has 4 divisors (see below), whose sum is σ = 1348270688. Its totient is φ = 674135340.

The previous prime is 1011203003. The next prime is 1011203021. The reversal of 1011203013 is 3103021101.

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.

It is not a de Polignac number, because 1011203013 - 2⁶ = 1011202949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1011203013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011203003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168533833 + ... + 168533838.

It is an arithmetic number, because the mean of its divisors is an integer number (337067672).

Almost surely, 2^1011203013 is an apocalyptic number.

It is an amenable number.

1011203013 is a deficient number, since it is larger than the sum of its proper divisors (337067675).

1011203013 is an equidigital number, since it uses as much as digits as its factorization.

1011203013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337067674.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1011203013 is about 31799.4184380784. The cubic root of 1011203013 is about 1003.7204785399.

Adding to 1011203013 its reverse (3103021101), we get a palindrome (4114224114).

The spelling of 1011203013 in words is "one billion, eleven million, two hundred three thousand, thirteen".