1230545320 has 16 divisors (see below), whose sum is σ = 2768727060. Its totient is φ = 492218112.

The previous prime is 1230545311. The next prime is 1230545339. The reversal of 1230545320 is 235450321.

It can be written as a sum of positive squares in 2 ways, for example, as 1147989924 + 82555396 = 33882^2 + 9086^2 .

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, 15381777 + ... + 15381856.

Almost surely, 2^1230545320 is an apocalyptic number.

1230545320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230545320 is an abundant number, since it is smaller than the sum of its proper divisors (1538181740).

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

1230545320 is a wasteful number, since it uses less digits than its factorization.

1230545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30763644 (or 30763640 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 1230545320 is about 35079.1294076692. The cubic root of 1230545320 is about 1071.5995873135.

Adding to 1230545320 its reverse (235450321), we get a palindrome (1465995641).

The spelling of 1230545320 in words is "one billion, two hundred thirty million, five hundred forty-five thousand, three hundred twenty".