1023112131011 has 4 divisors (see below), whose sum is σ = 1044880474272. Its totient is φ = 1001343787752.

The previous prime is 1023112130987. The next prime is 1023112131017. The reversal of 1023112131011 is 1101312113201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023112131011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023112131017) 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, 10884171560 + ... + 10884171653.

It is an arithmetic number, because the mean of its divisors is an integer number (261220118568).

Almost surely, 2^{1023112131011} is an apocalyptic number.

1023112131011 is a deficient number, since it is larger than the sum of its proper divisors (21768343261).

1023112131011 is an equidigital number, since it uses as much as digits as its factorization.

1023112131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21768343260.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1023112131011 its reverse (1101312113201), we get a palindrome (2124424244212).

It can be divided in two parts, 102311 and 2131011, that added together give a palindrome (2233322).

The spelling of 1023112131011 in words is "one trillion, twenty-three billion, one hundred twelve million, one hundred thirty-one thousand, eleven".