11131115351 has 4 divisors (see below), whose sum is σ = 11615076912. Its totient is φ = 10647153792.

The previous prime is 11131115339. The next prime is 11131115393. The reversal of 11131115351 is 15351113111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15351113111 = 167 ⋅91922833.

It is a cyclic number.

It is not a de Polignac number, because 11131115351 - 2¹⁴ = 11131098967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 483961537 = 11131115351 / (1 + 1 + 1 + 3 + 1 + 1 + 1 + 5 + 3 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131115651) 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, 241980746 + ... + 241980791.

It is an arithmetic number, because the mean of its divisors is an integer number (2903769228).

Almost surely, 2^11131115351 is an apocalyptic number.

11131115351 is a deficient number, since it is larger than the sum of its proper divisors (483961561).

11131115351 is an equidigital number, since it uses as much as digits as its factorization.

11131115351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483961560.

The product of its digits is 225, while the sum is 23.

Adding to 11131115351 its reverse (15351113111), we get a palindrome (26482228462).

The spelling of 11131115351 in words is "eleven billion, one hundred thirty-one million, one hundred fifteen thousand, three hundred fifty-one".