1331001012 has 24 divisors (see below), whose sum is σ = 3388002912. Its totient is φ = 403333600.

The previous prime is 1331001011. The next prime is 1331001013. The reversal of 1331001012 is 2101001331.

It is an interprime number because it is at equal distance from previous prime (1331001011) and next prime (1331001013).

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 (1331001011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5041539 + ... + 5041802.

It is an arithmetic number, because the mean of its divisors is an integer number (141166788).

Almost surely, 2^1331001012 is an apocalyptic number.

1331001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331001012 is an abundant number, since it is smaller than the sum of its proper divisors (2057001900).

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

1331001012 is a wasteful number, since it uses less digits than its factorization.

1331001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10083359 (or 10083357 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1331001012 is about 36482.8865634286. The cubic root of 1331001012 is about 1100.0002787878. Note that the first 3 decimals are identical.

Adding to 1331001012 its reverse (2101001331), we get a palindrome (3432002343).

The spelling of 1331001012 in words is "one billion, three hundred thirty-one million, one thousand, twelve".