1203031213 has 4 divisors (see below), whose sum is σ = 1204621180. Its totient is φ = 1201441248.

The previous prime is 1203031211. The next prime is 1203031243. The reversal of 1203031213 is 3121303021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3121303021 = 23 ⋅135708827.

It can be written as a sum of positive squares in 2 ways, for example, as 862185769 + 340845444 = 29363^2 + 18462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203031213 - 2¹ = 1203031211 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 (1203031211) 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, 793848 + ... + 795361.

It is an arithmetic number, because the mean of its divisors is an integer number (301155295).

Almost surely, 2^1203031213 is an apocalyptic number.

It is an amenable number.

1203031213 is a deficient number, since it is larger than the sum of its proper divisors (1589967).

1203031213 is an equidigital number, since it uses as much as digits as its factorization.

1203031213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589966.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1203031213 is about 34684.7403478821. The cubic root of 1203031213 is about 1063.5525791976.

Adding to 1203031213 its reverse (3121303021), we get a palindrome (4324334234).

The spelling of 1203031213 in words is "one billion, two hundred three million, thirty-one thousand, two hundred thirteen".