11312021330 has 16 divisors (see below), whose sum is σ = 20369916504. Its totient is φ = 4522968960.

The previous prime is 11312021327. The next prime is 11312021333. The reversal of 11312021330 is 3312021311.

It is an interprime number because it is at equal distance from previous prime (11312021327) and next prime (11312021333).

It can be written as a sum of positive squares in 4 ways, for example, as 9709540369 + 1602480961 = 98537^2 + 40031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11312021299 and 11312021308.

It is not an unprimeable number, because it can be changed into a prime (11312021333) 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, 203981 + ... + 253440.

Almost surely, 2^11312021330 is an apocalyptic number.

11312021330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11312021330 is a deficient number, since it is larger than the sum of its proper divisors (9057895174).

11312021330 is a wasteful number, since it uses less digits than its factorization.

11312021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459901.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 11312021330 its reverse (3312021311), we get a palindrome (14624042641).

The spelling of 11312021330 in words is "eleven billion, three hundred twelve million, twenty-one thousand, three hundred thirty".