11381534 has 8 divisors (see below), whose sum is σ = 18076608. Its totient is φ = 5356000.

The previous prime is 11381521. The next prime is 11381537. The reversal of 11381534 is 43518311.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11381537) 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, 167342 + ... + 167409.

It is an arithmetic number, because the mean of its divisors is an integer number (2259576).

Almost surely, 2^11381534 is an apocalyptic number.

11381534 is a deficient number, since it is larger than the sum of its proper divisors (6695074).

11381534 is a wasteful number, since it uses less digits than its factorization.

11381534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334770.

The product of its digits is 1440, while the sum is 26.

The square root of 11381534 is about 3373.6529163505. The cubic root of 11381534 is about 224.9401256321.

Adding to 11381534 its reverse (43518311), we get a palindrome (54899845).

The spelling of 11381534 in words is "eleven million, three hundred eighty-one thousand, five hundred thirty-four".