1212311023 has 8 divisors (see below), whose sum is σ = 1511452800. Its totient is φ = 944657880.

The previous prime is 1212311003. The next prime is 1212311027. The reversal of 1212311023 is 3201132121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212311023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212310988 and 1212311006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212311027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7872073 + ... + 7872226.

It is an arithmetic number, because the mean of its divisors is an integer number (188931600).

Almost surely, 2^1212311023 is an apocalyptic number.

1212311023 is a deficient number, since it is larger than the sum of its proper divisors (299141777).

1212311023 is a wasteful number, since it uses less digits than its factorization.

1212311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15744317.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1212311023 is about 34818.2570356415. The cubic root of 1212311023 is about 1066.2802161375.

Adding to 1212311023 its reverse (3201132121), we get a palindrome (4413443144).

The spelling of 1212311023 in words is "one billion, two hundred twelve million, three hundred eleven thousand, twenty-three".