1103212331 has 32 divisors (see below), whose sum is σ = 1296243648. Its totient is φ = 929710080.

The previous prime is 1103212321. The next prime is 1103212393. The reversal of 1103212331 is 1332123011.

It is a de Polignac number, because none of the positive numbers 2^k-1103212331 is a prime.

It is a super-2 number, since 2×1103212331² = 2434154894540907122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103212321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1135676 + ... + 1136646.

It is an arithmetic number, because the mean of its divisors is an integer number (40507614).

Almost surely, 2^1103212331 is an apocalyptic number.

1103212331 is a deficient number, since it is larger than the sum of its proper divisors (193031317).

1103212331 is a wasteful number, since it uses less digits than its factorization.

1103212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151.

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

The square root of 1103212331 is about 33214.6403111640. The cubic root of 1103212331 is about 1033.2839950660.

Adding to 1103212331 its reverse (1332123011), we get a palindrome (2435335342).

The spelling of 1103212331 in words is "one billion, one hundred three million, two hundred twelve thousand, three hundred thirty-one".