11504307381 has 8 divisors (see below), whose sum is σ = 17530373184. Its totient is φ = 6573889920.

The previous prime is 11504307361. The next prime is 11504307389. The reversal of 11504307381 is 18370340511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11504307381 - 2⁶ = 11504307317 is a prime.

It is a super-2 number, since 2×11504307381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11504307389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273912060 + ... + 273912101.

It is an arithmetic number, because the mean of its divisors is an integer number (2191296648).

Almost surely, 2^11504307381 is an apocalyptic number.

It is an amenable number.

11504307381 is a deficient number, since it is larger than the sum of its proper divisors (6026065803).

11504307381 is an equidigital number, since it uses as much as digits as its factorization.

11504307381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547824171.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 11504307381 its reverse (18370340511), we get a palindrome (29874647892).

The spelling of 11504307381 in words is "eleven billion, five hundred four million, three hundred seven thousand, three hundred eighty-one".