1031320055 has 8 divisors (see below), whose sum is σ = 1271032512. Its totient is φ = 802757088.

The previous prime is 1031320033. The next prime is 1031320063. The reversal of 1031320055 is 5500231301.

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 1031320055 - 2²² = 1027125751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2787167 + ... + 2787536.

It is an arithmetic number, because the mean of its divisors is an integer number (158879064).

Almost surely, 2^1031320055 is an apocalyptic number.

1031320055 is a deficient number, since it is larger than the sum of its proper divisors (239712457).

1031320055 is an equidigital number, since it uses as much as digits as its factorization.

1031320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574745.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1031320055 is about 32114.1721830098. The cubic root of 1031320055 is about 1010.3328821381.

Adding to 1031320055 its reverse (5500231301), we get a palindrome (6531551356).

The spelling of 1031320055 in words is "one billion, thirty-one million, three hundred twenty thousand, fifty-five".