1031012203 has 4 divisors (see below), whose sum is σ = 1110320848. Its totient is φ = 951703560.

The previous prime is 1031012201. The next prime is 1031012231. The reversal of 1031012203 is 3022101301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022101301 = 277 ⋅10910113.

It is a cyclic number.

It is not a de Polignac number, because 1031012203 - 2¹ = 1031012201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 79308631 = 1031012203 / (1 + 0 + 3 + 1 + 0 + 1 + 2 + 2 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (1031012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39654303 + ... + 39654328.

It is an arithmetic number, because the mean of its divisors is an integer number (277580212).

Almost surely, 2^1031012203 is an apocalyptic number.

1031012203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1031012203 is a deficient number, since it is larger than the sum of its proper divisors (79308645).

1031012203 is an equidigital number, since it uses as much as digits as its factorization.

1031012203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79308644.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1031012203 is about 32109.3787389292. The cubic root of 1031012203 is about 1010.2323430442.

Adding to 1031012203 its reverse (3022101301), we get a palindrome (4053113504).

The spelling of 1031012203 in words is "one billion, thirty-one million, twelve thousand, two hundred three".