1231002002 has 8 divisors (see below), whose sum is σ = 1906067712. Its totient is φ = 595646100.

The previous prime is 1231001953. The next prime is 1231002007. The reversal of 1231002002 is 2002001321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1231002007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9927374 + ... + 9927497.

It is an arithmetic number, because the mean of its divisors is an integer number (238258464).

Almost surely, 2^1231002002 is an apocalyptic number.

1231002002 is a deficient number, since it is larger than the sum of its proper divisors (675065710).

1231002002 is a wasteful number, since it uses less digits than its factorization.

1231002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19854904.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1231002002 is about 35085.6381159015. The cubic root of 1231002002 is about 1071.7321355173.

Adding to 1231002002 its reverse (2002001321), we get a palindrome (3233003323).

The spelling of 1231002002 in words is "one billion, two hundred thirty-one million, two thousand, two".