1200320554431 has 8 divisors (see below), whose sum is σ = 1600614340480. Its totient is φ = 800120235672.

The previous prime is 1200320554427. The next prime is 1200320554483. The reversal of 1200320554431 is 1344550230021.

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

It is not a de Polignac number, because 1200320554431 - 2² = 1200320554427 is a prime.

It is a super-2 number, since 2×1200320554431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200320554031) 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, 23336851 + ... + 23388228.

It is an arithmetic number, because the mean of its divisors is an integer number (200076792560).

Almost surely, 2^{1200320554431} is an apocalyptic number.

1200320554431 is a deficient number, since it is larger than the sum of its proper divisors (400293786049).

1200320554431 is an equidigital number, since it uses as much as digits as its factorization.

1200320554431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46733645.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 1200320554431 its reverse (1344550230021), we get a palindrome (2544870784452).

The spelling of 1200320554431 in words is "one trillion, two hundred billion, three hundred twenty million, five hundred fifty-four thousand, four hundred thirty-one".