1311055554 has 16 divisors (see below), whose sum is σ = 2665097280. Its totient is φ = 429854160.

The previous prime is 1311055547. The next prime is 1311055561. The reversal of 1311055554 is 4555501131.

It is an interprime number because it is at equal distance from previous prime (1311055547) and next prime (1311055561).

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, 1790694 + ... + 1791425.

It is an arithmetic number, because the mean of its divisors is an integer number (166568580).

Almost surely, 2^1311055554 is an apocalyptic number.

1311055554 is an abundant number, since it is smaller than the sum of its proper divisors (1354041726).

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

1311055554 is a wasteful number, since it uses less digits than its factorization.

1311055554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582185.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 1311055554 is about 36208.5011288786. The cubic root of 1311055554 is about 1094.4779880852.

Adding to 1311055554 its reverse (4555501131), we get a palindrome (5866556685).

The spelling of 1311055554 in words is "one billion, three hundred eleven million, fifty-five thousand, five hundred fifty-four".