1203217812 has 36 divisors (see below), whose sum is σ = 3065427456. Its totient is φ = 397913040.

The previous prime is 1203217753. The next prime is 1203217843. The reversal of 1203217812 is 2187123021.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1203217812² = 2895466206228134688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 127014 + ... + 136157.

Almost surely, 2^1203217812 is an apocalyptic number.

1203217812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1203217812 is an abundant number, since it is smaller than the sum of its proper divisors (1862209644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203217812 is a wasteful number, since it uses less digits than its factorization.

1203217812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263308 (or 263303 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1203217812 is about 34687.4301729027. The cubic root of 1203217812 is about 1063.6075646337.

The spelling of 1203217812 in words is "one billion, two hundred three million, two hundred seventeen thousand, eight hundred twelve".