1031213123123 has 2 divisors, whose sum is σ = 1031213123124. Its totient is φ = 1031213123122.

The previous prime is 1031213123077. The next prime is 1031213123153. The reversal of 1031213123123 is 3213213121301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031213123123 - 2⁸ = 1031213122867 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1031213123153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515606561561 + 515606561562.

It is an arithmetic number, because the mean of its divisors is an integer number (515606561562).

Almost surely, 2^{1031213123123} is an apocalyptic number.

1031213123123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031213123123 is an equidigital number, since it uses as much as digits as its factorization.

1031213123123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1031213123123 its reverse (3213213121301), we get a palindrome (4244426244424).

The spelling of 1031213123123 in words is "one trillion, thirty-one billion, two hundred thirteen million, one hundred twenty-three thousand, one hundred twenty-three".