1203312231 has 12 divisors (see below), whose sum is σ = 1896128520. Its totient is φ = 729280080.

The previous prime is 1203312221. The next prime is 1203312233. The reversal of 1203312231 is 1322133021.

1203312231 is a `hidden beast` number, since 120 + 3 + 312 + 231 = 666.

It is not a de Polignac number, because 1203312231 - 2¹⁵ = 1203279463 is a prime.

It is a super-2 number, since 2×1203312231² = 2895920650548394722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203312233) 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 11 ways as a sum of consecutive naturals, for example, 6077236 + ... + 6077433.

It is an arithmetic number, because the mean of its divisors is an integer number (158010710).

Almost surely, 2^1203312231 is an apocalyptic number.

1203312231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1203312231 is a deficient number, since it is larger than the sum of its proper divisors (692816289).

1203312231 is a wasteful number, since it uses less digits than its factorization.

1203312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12154686 (or 12154683 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1203312231 is about 34688.7911435380. The cubic root of 1203312231 is about 1063.6353850707.

Adding to 1203312231 its reverse (1322133021), we get a palindrome (2525445252).

The spelling of 1203312231 in words is "one billion, two hundred three million, three hundred twelve thousand, two hundred thirty-one".