1020115312 has 20 divisors (see below), whose sum is σ = 1978455960. Its totient is φ = 509546048.

The previous prime is 1020115309. The next prime is 1020115319. The reversal of 1020115312 is 2135110201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020115319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15262 + ... + 47677.

It is an arithmetic number, because the mean of its divisors is an integer number (98922798).

Almost surely, 2^1020115312 is an apocalyptic number.

It is an amenable number.

1020115312 is a deficient number, since it is larger than the sum of its proper divisors (958340648).

1020115312 is a wasteful number, since it uses less digits than its factorization.

1020115312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63960 (or 63954 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1020115312 is about 31939.2440737097. The cubic root of 1020115312 is about 1006.6606413588.

Adding to 1020115312 its reverse (2135110201), we get a palindrome (3155225513).

The spelling of 1020115312 in words is "one billion, twenty million, one hundred fifteen thousand, three hundred twelve".