1011313312123 has 4 divisors (see below), whose sum is σ = 1014565123728. Its totient is φ = 1008061500520.

The previous prime is 1011313312049. The next prime is 1011313312153. The reversal of 1011313312123 is 3212133131101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011313312123 - 2²⁹ = 1010776441211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011313312094 and 1011313312103.

It is not an unprimeable number, because it can be changed into a prime (1011313312153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625905336 + ... + 1625905957.

It is an arithmetic number, because the mean of its divisors is an integer number (253641280932).

Almost surely, 2^{1011313312123} is an apocalyptic number.

1011313312123 is a deficient number, since it is larger than the sum of its proper divisors (3251811605).

1011313312123 is an equidigital number, since it uses as much as digits as its factorization.

1011313312123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251811604.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1011313312123 its reverse (3212133131101), we get a palindrome (4223446443224).

The spelling of 1011313312123 in words is "one trillion, eleven billion, three hundred thirteen million, three hundred twelve thousand, one hundred twenty-three".