1113220331 has 4 divisors (see below), whose sum is σ = 1113569592. Its totient is φ = 1112871072.

The previous prime is 1113220327. The next prime is 1113220349. The reversal of 1113220331 is 1330223111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1330223111 = 7 ⋅190031873.

It is a cyclic number.

It is not a de Polignac number, because 1113220331 - 2² = 1113220327 is a prime.

It is a super-2 number, since 2×1113220331² = 2478519010703499122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113220531) 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, 169805 + ... + 176238.

It is an arithmetic number, because the mean of its divisors is an integer number (278392398).

Almost surely, 2^1113220331 is an apocalyptic number.

1113220331 is a deficient number, since it is larger than the sum of its proper divisors (349261).

1113220331 is an equidigital number, since it uses as much as digits as its factorization.

1113220331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349260.

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

The square root of 1113220331 is about 33364.9566311722. The cubic root of 1113220331 is about 1036.3991380437.

Adding to 1113220331 its reverse (1330223111), we get a palindrome (2443443442).

The spelling of 1113220331 in words is "one billion, one hundred thirteen million, two hundred twenty thousand, three hundred thirty-one".