1311455406 has 16 divisors (see below), whose sum is σ = 2652382800. Its totient is φ = 432239808.

The previous prime is 1311455393. The next prime is 1311455419. The reversal of 1311455406 is 6045541131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1311455393) and next prime (1311455419).

It is a Curzon 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, 1227421 + ... + 1228488.

It is an arithmetic number, because the mean of its divisors is an integer number (165773925).

Almost surely, 2^1311455406 is an apocalyptic number.

1311455406 is an abundant number, since it is smaller than the sum of its proper divisors (1340927394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311455406 is a wasteful number, since it uses less digits than its factorization.

1311455406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456003.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1311455406 is about 36214.0222289654. The cubic root of 1311455406 is about 1094.5892431546.

Adding to 1311455406 its reverse (6045541131), we get a palindrome (7356996537).

The spelling of 1311455406 in words is "one billion, three hundred eleven million, four hundred fifty-five thousand, four hundred six".