1213317832 has 8 divisors (see below), whose sum is σ = 2274970950. Its totient is φ = 606658912.

The previous prime is 1213317779. The next prime is 1213317869. The reversal of 1213317832 is 2387133121.

It can be written as a sum of positive squares in only one way, i.e., 732568356 + 480749476 = 27066^2 + 21926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1213317832² = 2944280322898360448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213317794 and 1213317803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75832357 + ... + 75832372.

Almost surely, 2^1213317832 is an apocalyptic number.

It is an amenable number.

1213317832 is a deficient number, since it is larger than the sum of its proper divisors (1061653118).

1213317832 is a wasteful number, since it uses less digits than its factorization.

1213317832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151664735 (or 151664731 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 1213317832 is about 34832.7120965336. The cubic root of 1213317832 is about 1066.5753118810.

The spelling of 1213317832 in words is "one billion, two hundred thirteen million, three hundred seventeen thousand, eight hundred thirty-two".