1002231999 has 24 divisors (see below), whose sum is σ = 1472328000. Its totient is φ = 656847360.

The previous prime is 1002231973. The next prime is 1002232009. The reversal of 1002231999 is 9991322001.

It is a happy number.

It is not a de Polignac number, because 1002231999 - 2¹⁶ = 1002166463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002231929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168427 + ... + 174275.

It is an arithmetic number, because the mean of its divisors is an integer number (61347000).

Almost surely, 2^1002231999 is an apocalyptic number.

1002231999 is a deficient number, since it is larger than the sum of its proper divisors (470096001).

1002231999 is a wasteful number, since it uses less digits than its factorization.

1002231999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6175 (or 6172 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 1002231999 is about 31658.0479341352. The cubic root of 1002231999 is about 1000.7434468165.

The spelling of 1002231999 in words is "one billion, two million, two hundred thirty-one thousand, nine hundred ninety-nine".