1203503413 has 4 divisors (see below), whose sum is σ = 1375432480. Its totient is φ = 1031574348.

The previous prime is 1203503341. The next prime is 1203503429. The reversal of 1203503413 is 3143053021.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3143053021 = 42083 ⋅74687.

It is not a de Polignac number, because 1203503413 - 2⁹ = 1203502901 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 (1203503113) 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, 85964523 + ... + 85964536.

It is an arithmetic number, because the mean of its divisors is an integer number (343858120).

Almost surely, 2^1203503413 is an apocalyptic number.

It is an amenable number.

1203503413 is a deficient number, since it is larger than the sum of its proper divisors (171929067).

1203503413 is an equidigital number, since it uses as much as digits as its factorization.

1203503413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171929066.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1203503413 is about 34691.5467080959. The cubic root of 1203503413 is about 1063.6917121449.

Adding to 1203503413 its reverse (3143053021), we get a palindrome (4346556434).

The spelling of 1203503413 in words is "one billion, two hundred three million, five hundred three thousand, four hundred thirteen".