1230312020 has 48 divisors (see below), whose sum is σ = 2957727360. Its totient is φ = 421110144.

The previous prime is 1230312019. The next prime is 1230312023. The reversal of 1230312020 is 202130321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1230311986 and 1230312004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230312023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79562 + ... + 93758.

It is an arithmetic number, because the mean of its divisors is an integer number (61619320).

Almost surely, 2^1230312020 is an apocalyptic number.

1230312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230312020 is an abundant number, since it is smaller than the sum of its proper divisors (1727415340).

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

1230312020 is a wasteful number, since it uses less digits than its factorization.

1230312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14832 (or 14830 counting only the distinct ones).

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

The square root of 1230312020 is about 35075.8039109583. The cubic root of 1230312020 is about 1071.5318612464.

Adding to 1230312020 its reverse (202130321), we get a palindrome (1432442341).

The spelling of 1230312020 in words is "one billion, two hundred thirty million, three hundred twelve thousand, twenty".