1320331231031 has 8 divisors (see below), whose sum is σ = 1425245107680. Its totient is φ = 1219376368672.

The previous prime is 1320331231027. The next prime is 1320331231033. The reversal of 1320331231031 is 1301321330231.

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 1320331231031 - 2² = 1320331231027 is a prime.

It is a super-2 number, since 2×1320331231031² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320331230988 and 1320331231006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320331231033) 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, 989752880 + ... + 989754213.

It is an arithmetic number, because the mean of its divisors is an integer number (178155638460).

Almost surely, 2^{1320331231031} is an apocalyptic number.

1320331231031 is a deficient number, since it is larger than the sum of its proper divisors (104913876649).

1320331231031 is a wasteful number, since it uses less digits than its factorization.

1320331231031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979507145.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1320331231031 its reverse (1301321330231), we get a palindrome (2621652561262).

The spelling of 1320331231031 in words is "one trillion, three hundred twenty billion, three hundred thirty-one million, two hundred thirty-one thousand, thirty-one".