1310321554091 has 4 divisors (see below), whose sum is σ = 1429441695384. Its totient is φ = 1191201412800.

The previous prime is 1310321554063. The next prime is 1310321554093. The reversal of 1310321554091 is 1904551230131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310321554091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1310321554093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59560070630 + ... + 59560070651.

It is an arithmetic number, because the mean of its divisors is an integer number (357360423846).

Almost surely, 2^{1310321554091} is an apocalyptic number.

1310321554091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1310321554091 is a deficient number, since it is larger than the sum of its proper divisors (119120141293).

1310321554091 is a wasteful number, since it uses less digits than its factorization.

1310321554091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119120141292.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 1310321554091 in words is "one trillion, three hundred ten billion, three hundred twenty-one million, five hundred fifty-four thousand, ninety-one".