11231020 has 12 divisors (see below), whose sum is σ = 23585184. Its totient is φ = 4492400.

The previous prime is 11230939. The next prime is 11231027. The reversal of 11231020 is 2013211.

It is a super-2 number, since 2×11231020² = 252271620480800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11230988 and 11231006.

It is not an unprimeable number, because it can be changed into a prime (11231027) 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, 280756 + ... + 280795.

It is an arithmetic number, because the mean of its divisors is an integer number (1965432).

Almost surely, 2^11231020 is an apocalyptic number.

11231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231020 is an abundant number, since it is smaller than the sum of its proper divisors (12354164).

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

11231020 is a wasteful number, since it uses less digits than its factorization.

11231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561560 (or 561558 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 11231020 is about 3351.2714005285. The cubic root of 11231020 is about 223.9441559345.

Adding to 11231020 its reverse (2013211), we get a palindrome (13244231).

The spelling of 11231020 in words is "eleven million, two hundred thirty-one thousand, twenty".