1023154213105 has 4 divisors (see below), whose sum is σ = 1227785055732. Its totient is φ = 818523370480.

The previous prime is 1023154213057. The next prime is 1023154213111. The reversal of 1023154213105 is 5013124513201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148989052081 + 874165161024 = 385991^2 + 934968^2 .

It is not a de Polignac number, because 1023154213105 - 2⁹ = 1023154212593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102315421306 + ... + 102315421315.

It is an arithmetic number, because the mean of its divisors is an integer number (306946263933).

Almost surely, 2^{1023154213105} is an apocalyptic number.

It is an amenable number.

1023154213105 is a deficient number, since it is larger than the sum of its proper divisors (204630842627).

1023154213105 is an equidigital number, since it uses as much as digits as its factorization.

1023154213105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204630842626.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 1023154213105 its reverse (5013124513201), we get a palindrome (6036278726306).

The spelling of 1023154213105 in words is "one trillion, twenty-three billion, one hundred fifty-four million, two hundred thirteen thousand, one hundred five".