1320231655351 has 8 divisors (see below), whose sum is σ = 1533571197344. Its totient is φ = 1113075868320.

The previous prime is 1320231655313. The next prime is 1320231655367. The reversal of 1320231655351 is 1535561320231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320231655351 - 2⁹ = 1320231654839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320231655351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320231655151) 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, 1545938280 + ... + 1545939133.

It is an arithmetic number, because the mean of its divisors is an integer number (191696399668).

Almost surely, 2^{1320231655351} is an apocalyptic number.

1320231655351 is a deficient number, since it is larger than the sum of its proper divisors (213339541993).

1320231655351 is an equidigital number, since it uses as much as digits as its factorization.

1320231655351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091877481.

The product of its (nonzero) digits is 81000, while the sum is 37.

Adding to 1320231655351 its reverse (1535561320231), we get a palindrome (2855792975582).

The spelling of 1320231655351 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, six hundred fifty-five thousand, three hundred fifty-one".