11385054631 has 4 divisors (see below), whose sum is σ = 11404062000. Its totient is φ = 11366047264.

The previous prime is 11385054607. The next prime is 11385054641. The reversal of 11385054631 is 13645058311.

11385054631 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, and also an emirpimes, since its reverse is a distinct semiprime: 13645058311 = 73 ⋅186918607.

It is a cyclic number.

It is not a de Polignac number, because 11385054631 - 2⁵ = 11385054599 is a prime.

It is a super-2 number, since 2×11385054631² (a number of 21 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 (11385054641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9502786 + ... + 9503983.

It is an arithmetic number, because the mean of its divisors is an integer number (2851015500).

Almost surely, 2^11385054631 is an apocalyptic number.

11385054631 is a deficient number, since it is larger than the sum of its proper divisors (19007369).

11385054631 is an equidigital number, since it uses as much as digits as its factorization.

11385054631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19007368.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 11385054631 in words is "eleven billion, three hundred eighty-five million, fifty-four thousand, six hundred thirty-one".