11403221331 has 8 divisors (see below), whose sum is σ = 15301138384. Its totient is φ = 7553725920.

The previous prime is 11403221329. The next prime is 11403221339. The reversal of 11403221331 is 13312230411.

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

It is not a de Polignac number, because 11403221331 - 2¹ = 11403221329 is a prime.

It is a super-2 number, since 2×11403221331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11403221298 and 11403221307.

It is not an unprimeable number, because it can be changed into a prime (11403221339) 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, 12104860 + ... + 12105801.

It is an arithmetic number, because the mean of its divisors is an integer number (1912642298).

Almost surely, 2^11403221331 is an apocalyptic number.

11403221331 is a deficient number, since it is larger than the sum of its proper divisors (3897917053).

11403221331 is a wasteful number, since it uses less digits than its factorization.

11403221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24210821.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11403221331 its reverse (13312230411), we get a palindrome (24715451742).

The spelling of 11403221331 in words is "eleven billion, four hundred three million, two hundred twenty-one thousand, three hundred thirty-one".