1013203043 has 4 divisors (see below), whose sum is σ = 1072803240. Its totient is φ = 953602848.

The previous prime is 1013203031. The next prime is 1013203049. The reversal of 1013203043 is 3403023101.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1013203043 - 2⁴ = 1013203027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 59600179 = 1013203043 / (1 + 0 + 1 + 3 + 2 + 0 + 3 + 0 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013203049) 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, 29800073 + ... + 29800106.

It is an arithmetic number, because the mean of its divisors is an integer number (268200810).

Almost surely, 2^1013203043 is an apocalyptic number.

1013203043 is a deficient number, since it is larger than the sum of its proper divisors (59600197).

1013203043 is an equidigital number, since it uses as much as digits as its factorization.

1013203043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59600196.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1013203043 is about 31830.8504913080. The cubic root of 1013203043 is about 1004.3817862392.

Adding to 1013203043 its reverse (3403023101), we get a palindrome (4416226144).

The spelling of 1013203043 in words is "one billion, thirteen million, two hundred three thousand, forty-three".