1231002443402 has 8 divisors (see below), whose sum is σ = 1847139741216. Its totient is φ = 615289196332.

The previous prime is 1231002443401. The next prime is 1231002443479. The reversal of 1231002443402 is 2043442001321.

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 (1231002443401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106005428 + ... + 106017039.

It is an arithmetic number, because the mean of its divisors is an integer number (230892467652).

Almost surely, 2^{1231002443402} is an apocalyptic number.

1231002443402 is a deficient number, since it is larger than the sum of its proper divisors (616137297814).

1231002443402 is a wasteful number, since it uses less digits than its factorization.

1231002443402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212025372.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1231002443402 its reverse (2043442001321), we get a palindrome (3274444444723).

The spelling of 1231002443402 in words is "one trillion, two hundred thirty-one billion, two million, four hundred forty-three thousand, four hundred two".