1311154315530 has 64 divisors (see below), whose sum is σ = 3354318950400. Its totient is φ = 327046075200.

The previous prime is 1311154315519. The next prime is 1311154315553. The reversal of 1311154315530 is 355134511131.

It is a junction number, because it is equal to n+sod(n) for n = 1311154315491 and 1311154315500.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14513646 + ... + 14603705.

It is an arithmetic number, because the mean of its divisors is an integer number (52411233600).

Almost surely, 2^{1311154315530} is an apocalyptic number.

1311154315530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311154315530 is an abundant number, since it is smaller than the sum of its proper divisors (2043164634870).

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

1311154315530 is a wasteful number, since it uses less digits than its factorization.

1311154315530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29117459.

The product of its (nonzero) digits is 13500, while the sum is 33.

Adding to 1311154315530 its reverse (355134511131), we get a palindrome (1666288826661).

The spelling of 1311154315530 in words is "one trillion, three hundred eleven billion, one hundred fifty-four million, three hundred fifteen thousand, five hundred thirty".