1020030312 has 64 divisors (see below), whose sum is σ = 3041095680. Its totient is φ = 278764992.

The previous prime is 1020030307. The next prime is 1020030313. The reversal of 1020030312 is 2130300201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1020030313) 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, 128128 + ... + 135855.

It is an arithmetic number, because the mean of its divisors is an integer number (47517120).

Almost surely, 2^1020030312 is an apocalyptic number.

1020030312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020030312 is an abundant number, since it is smaller than the sum of its proper divisors (2021065368).

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

1020030312 is a wasteful number, since it uses less digits than its factorization.

1020030312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264022 (or 264018 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1020030312 is about 31937.9133945848. The cubic root of 1020030312 is about 1006.6326809475.

Adding to 1020030312 its reverse (2130300201), we get a palindrome (3150330513).

The spelling of 1020030312 in words is "one billion, twenty million, thirty thousand, three hundred twelve".