11631020 has 12 divisors (see below), whose sum is σ = 24425184. Its totient is φ = 4652400.

The previous prime is 11631013. The next prime is 11631029. The reversal of 11631020 is 2013611.

It is a junction number, because it is equal to n+sod(n) for n = 11630986 and 11631004.

It is not an unprimeable number, because it can be changed into a prime (11631029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290756 + ... + 290795.

It is an arithmetic number, because the mean of its divisors is an integer number (2035432).

Almost surely, 2^11631020 is an apocalyptic number.

11631020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11631020 is an abundant number, since it is smaller than the sum of its proper divisors (12794164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11631020 is a wasteful number, since it uses less digits than its factorization.

11631020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581560 (or 581558 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 11631020 is about 3410.4281256171. The cubic root of 11631020 is about 226.5718413429.

Adding to 11631020 its reverse (2013611), we get a palindrome (13644631).

The spelling of 11631020 in words is "eleven million, six hundred thirty-one thousand, twenty".