1030231220 has 12 divisors (see below), whose sum is σ = 2163485604. Its totient is φ = 412092480.

The previous prime is 1030231199. The next prime is 1030231247. The reversal of 1030231220 is 221320301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 451732516 + 578498704 = 21254^2 + 24052^2 .

It is a super-2 number, since 2×1030231220² = 2122752733325376800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1030231195 and 1030231204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25755761 + ... + 25755800.

It is an arithmetic number, because the mean of its divisors is an integer number (180290467).

Almost surely, 2^1030231220 is an apocalyptic number.

1030231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1030231220 is an abundant number, since it is smaller than the sum of its proper divisors (1133254384).

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

1030231220 is a wasteful number, since it uses less digits than its factorization.

1030231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51511570 (or 51511568 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1030231220 is about 32097.2151439965. The cubic root of 1030231220 is about 1009.9771977991.

Adding to 1030231220 its reverse (221320301), we get a palindrome (1251551521).

The spelling of 1030231220 in words is "one billion, thirty million, two hundred thirty-one thousand, two hundred twenty".