1230013220 has 12 divisors (see below), whose sum is σ = 2583027804. Its totient is φ = 492005280.

The previous prime is 1230013217. The next prime is 1230013231. The reversal of 1230013220 is 223100321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 170250304 + 1059762916 = 13048^2 + 32554^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1230013195 and 1230013204.

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, 30750311 + ... + 30750350.

It is an arithmetic number, because the mean of its divisors is an integer number (215252317).

Almost surely, 2^1230013220 is an apocalyptic number.

1230013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230013220 is an abundant number, since it is smaller than the sum of its proper divisors (1353014584).

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

1230013220 is a wasteful number, since it uses less digits than its factorization.

1230013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61500670 (or 61500668 counting only the distinct ones).

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

The square root of 1230013220 is about 35071.5443058899. The cubic root of 1230013220 is about 1071.4451082823.

Adding to 1230013220 its reverse (223100321), we get a palindrome (1453113541).

The spelling of 1230013220 in words is "one billion, two hundred thirty million, thirteen thousand, two hundred twenty".