11403031321 has 8 divisors (see below), whose sum is σ = 12442326624. Its totient is φ = 10364178720.

The previous prime is 11403031309. The next prime is 11403031349. The reversal of 11403031321 is 12313030411.

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

It is a cyclic number.

It is not a de Polignac number, because 11403031321 - 2¹⁹ = 11402507033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11403031021) 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, 55620 + ... + 160933.

It is an arithmetic number, because the mean of its divisors is an integer number (1555290828).

Almost surely, 2^11403031321 is an apocalyptic number.

11403031321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11403031321 is a deficient number, since it is larger than the sum of its proper divisors (1039295303).

11403031321 is a wasteful number, since it uses less digits than its factorization.

11403031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221351.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11403031321 its reverse (12313030411), we get a palindrome (23716061732).

The spelling of 11403031321 in words is "eleven billion, four hundred three million, thirty-one thousand, three hundred twenty-one".