1203201331 has 2 divisors, whose sum is σ = 1203201332. Its totient is φ = 1203201330.

The previous prime is 1203201313. The next prime is 1203201359. The reversal of 1203201331 is 1331023021.

Together with previous prime (1203201313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (1331023021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1203201331 - 2¹⁷ = 1203070259 is a prime.

It is a super-2 number, since 2×1203201331² = 2895386885840343122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1203201031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601600665 + 601600666.

It is an arithmetic number, because the mean of its divisors is an integer number (601600666).

Almost surely, 2^1203201331 is an apocalyptic number.

1203201331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203201331 is an equidigital number, since it uses as much as digits as its factorization.

1203201331 is an evil number, because the sum of its binary digits is even.

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

The square root of 1203201331 is about 34687.1926076470. The cubic root of 1203201331 is about 1063.6027083791.

Adding to 1203201331 its reverse (1331023021), we get a palindrome (2534224352).

The spelling of 1203201331 in words is "one billion, two hundred three million, two hundred one thousand, three hundred thirty-one".