1212131023 has 2 divisors, whose sum is σ = 1212131024. Its totient is φ = 1212131022.

The previous prime is 1212131021. The next prime is 1212131029. The reversal of 1212131023 is 3201312121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212131023 - 2¹ = 1212131021 is a prime.

Together with 1212131021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1212130988 and 1212131006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212131021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606065511 + 606065512.

It is an arithmetic number, because the mean of its divisors is an integer number (606065512).

Almost surely, 2^1212131023 is an apocalyptic number.

1212131023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212131023 is an equidigital number, since it uses as much as digits as its factorization.

1212131023 is an evil number, because the sum of its binary digits is even.

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

The square root of 1212131023 is about 34815.6720888740. The cubic root of 1212131023 is about 1066.2274409187.

Adding to 1212131023 its reverse (3201312121), we get a palindrome (4413443144).

The spelling of 1212131023 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, twenty-three".