11312220403 has 4 divisors (see below), whose sum is σ = 12340604088. Its totient is φ = 10283836720.

The previous prime is 11312220373. The next prime is 11312220407. The reversal of 11312220403 is 30402221311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11312220403 - 2⁵ = 11312220371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11312220407) 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, 514191826 + ... + 514191847.

It is an arithmetic number, because the mean of its divisors is an integer number (3085151022).

Almost surely, 2^11312220403 is an apocalyptic number.

11312220403 is a deficient number, since it is larger than the sum of its proper divisors (1028383685).

11312220403 is a wasteful number, since it uses less digits than its factorization.

11312220403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028383684.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11312220403 its reverse (30402221311), we get a palindrome (41714441714).

The spelling of 11312220403 in words is "eleven billion, three hundred twelve million, two hundred twenty thousand, four hundred three".