1311553101 has 8 divisors (see below), whose sum is σ = 1809038880. Its totient is φ = 844218032.

The previous prime is 1311553099. The next prime is 1311553151. The reversal of 1311553101 is 1013551131.

1311553101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 1311553101 - 2¹ = 1311553099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311553151) 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, 7537575 + ... + 7537748.

It is an arithmetic number, because the mean of its divisors is an integer number (226129860).

Almost surely, 2^1311553101 is an apocalyptic number.

It is an amenable number.

1311553101 is a deficient number, since it is larger than the sum of its proper divisors (497485779).

1311553101 is a wasteful number, since it uses less digits than its factorization.

1311553101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15075355.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 1311553101 is about 36215.3710598138. The cubic root of 1311553101 is about 1094.6164224345.

The spelling of 1311553101 in words is "one billion, three hundred eleven million, five hundred fifty-three thousand, one hundred one".