11287851023 has 4 divisors (see below), whose sum is σ = 11292278448. Its totient is φ = 11283423600.

The previous prime is 11287851011. The next prime is 11287851041. The reversal of 11287851023 is 32015878211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32015878211 = 1297 ⋅24684563.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11287851023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11287851053) 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, 2209886 + ... + 2214987.

It is an arithmetic number, because the mean of its divisors is an integer number (2823069612).

Almost surely, 2^11287851023 is an apocalyptic number.

11287851023 is a deficient number, since it is larger than the sum of its proper divisors (4427425).

11287851023 is an equidigital number, since it uses as much as digits as its factorization.

11287851023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4427424.

The product of its (nonzero) digits is 26880, while the sum is 38.

The spelling of 11287851023 in words is "eleven billion, two hundred eighty-seven million, eight hundred fifty-one thousand, twenty-three".