1231022002 has 24 divisors (see below), whose sum is σ = 2150758656. Its totient is φ = 526905288.

The previous prime is 1231021993. The next prime is 1231022011. The reversal of 1231022002 is 2002201321.

It is an interprime number because it is at equal distance from previous prime (1231021993) and next prime (1231022011).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 73023 + ... + 88285.

It is an arithmetic number, because the mean of its divisors is an integer number (89614944).

Almost surely, 2^1231022002 is an apocalyptic number.

1231022002 is a deficient number, since it is larger than the sum of its proper divisors (919736654).

1231022002 is a wasteful number, since it uses less digits than its factorization.

1231022002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16102 (or 16095 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1231022002 is about 35085.9231316493. The cubic root of 1231022002 is about 1071.7379396038.

Adding to 1231022002 its reverse (2002201321), we get a palindrome (3233223323).

The spelling of 1231022002 in words is "one billion, two hundred thirty-one million, twenty-two thousand, two".