1311455097 has 24 divisors (see below), whose sum is σ = 1953937440. Its totient is φ = 869362200.

The previous prime is 1311455077. The next prime is 1311455113. The reversal of 1311455097 is 7905541131.

It is a happy number.

1311455097 is a `hidden beast` number, since 1 + 3 + 1 + 14 + 550 + 97 = 666.

It is not a de Polignac number, because 1311455097 - 2²⁰ = 1310406521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311455077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1201522 + ... + 1202612.

It is an arithmetic number, because the mean of its divisors is an integer number (81414060).

Almost surely, 2^1311455097 is an apocalyptic number.

It is an amenable number.

1311455097 is a deficient number, since it is larger than the sum of its proper divisors (642482343).

1311455097 is an equidigital number, since it uses as much as digits as its factorization.

1311455097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 36.

The square root of 1311455097 is about 36214.0179626619. The cubic root of 1311455097 is about 1094.5891571869.

The spelling of 1311455097 in words is "one billion, three hundred eleven million, four hundred fifty-five thousand, ninety-seven".