1020203413 has 4 divisors (see below), whose sum is σ = 1039452588. Its totient is φ = 1000954240.

The previous prime is 1020203411. The next prime is 1020203453. The reversal of 1020203413 is 3143020201.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 617920164 + 402283249 = 24858^2 + 20057^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020203413 - 2¹ = 1020203411 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 (1020203411) 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, 9624508 + ... + 9624613.

It is an arithmetic number, because the mean of its divisors is an integer number (259863147).

Almost surely, 2^1020203413 is an apocalyptic number.

It is an amenable number.

1020203413 is a deficient number, since it is larger than the sum of its proper divisors (19249175).

1020203413 is an equidigital number, since it uses as much as digits as its factorization.

1020203413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19249174.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1020203413 is about 31940.6232406320. The cubic root of 1020203413 is about 1006.6896201926.

Adding to 1020203413 its reverse (3143020201), we get a palindrome (4163223614).

The spelling of 1020203413 in words is "one billion, twenty million, two hundred three thousand, four hundred thirteen".