1212143023 has 16 divisors (see below), whose sum is σ = 1517160960. Its totient is φ = 942798816.

The previous prime is 1212143003. The next prime is 1212143087. The reversal of 1212143023 is 3203412121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1212143023 - 2¹⁷ = 1212011951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212143003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107515 + ... + 118252.

It is an arithmetic number, because the mean of its divisors is an integer number (94822560).

Almost surely, 2^1212143023 is an apocalyptic number.

1212143023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212143023 is a deficient number, since it is larger than the sum of its proper divisors (305017937).

1212143023 is a wasteful number, since it uses less digits than its factorization.

1212143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225846.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1212143023 is about 34815.8444246294. The cubic root of 1212143023 is about 1066.2309594291.

Adding to 1212143023 its reverse (3203412121), we get a palindrome (4415555144).

The spelling of 1212143023 in words is "one billion, two hundred twelve million, one hundred forty-three thousand, twenty-three".