11312001131023 has 4 divisors (see below), whose sum is σ = 11352257363088. Its totient is φ = 11271744898960.

The previous prime is 11312001131009. The next prime is 11312001131027. The reversal of 11312001131023 is 32013110021311.

11312001131023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-11312001131023 is a prime.

It is a super-2 number, since 2×11312001131023² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312001131027) 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, 20128115611 + ... + 20128116172.

It is an arithmetic number, because the mean of its divisors is an integer number (2838064340772).

Almost surely, 2^{11312001131023} is an apocalyptic number.

11312001131023 is a deficient number, since it is larger than the sum of its proper divisors (40256232065).

11312001131023 is an equidigital number, since it uses as much as digits as its factorization.

11312001131023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40256232064.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 11312001131023 its reverse (32013110021311), we get a palindrome (43325111152334).

The spelling of 11312001131023 in words is "eleven trillion, three hundred twelve billion, one million, one hundred thirty-one thousand, twenty-three".