1002012312 has 32 divisors (see below), whose sum is σ = 2862892800. Its totient is φ = 286289184.

The previous prime is 1002012311. The next prime is 1002012337. The reversal of 1002012312 is 2132102001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002012311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2982012 + ... + 2982347.

It is an arithmetic number, because the mean of its divisors is an integer number (89465400).

Almost surely, 2^1002012312 is an apocalyptic number.

1002012312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1002012312 is an abundant number, since it is smaller than the sum of its proper divisors (1860880488).

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

1002012312 is a wasteful number, since it uses less digits than its factorization.

1002012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5964375 (or 5964371 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1002012312 is about 31654.5780575259. The cubic root of 1002012312 is about 1000.6703212357.

Adding to 1002012312 its reverse (2132102001), we get a palindrome (3134114313).

The spelling of 1002012312 in words is "one billion, two million, twelve thousand, three hundred twelve".