1112213631 has 4 divisors (see below), whose sum is σ = 1482951512. Its totient is φ = 741475752.

The previous prime is 1112213611. The next prime is 1112213633. The reversal of 1112213631 is 1363122111.

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

It is a de Polignac number, because none of the positive numbers 2^k-1112213631 is a prime.

It is a super-2 number, since 2×1112213631² = 2474038321964408322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112213598 and 1112213607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112213633) 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, 185368936 + ... + 185368941.

It is an arithmetic number, because the mean of its divisors is an integer number (370737878).

Almost surely, 2^1112213631 is an apocalyptic number.

1112213631 is a deficient number, since it is larger than the sum of its proper divisors (370737881).

1112213631 is an equidigital number, since it uses as much as digits as its factorization.

1112213631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370737880.

The product of its digits is 216, while the sum is 21.

The square root of 1112213631 is about 33349.8670312192. The cubic root of 1112213631 is about 1036.0866339675.

Adding to 1112213631 its reverse (1363122111), we get a palindrome (2475335742).

It can be divided in two parts, 11122 and 13631, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 1112213631 in words is "one billion, one hundred twelve million, two hundred thirteen thousand, six hundred thirty-one".