1311230166510 has 32 divisors (see below), whose sum is σ = 3433038982272. Its totient is φ = 317873979680.

The previous prime is 1311230166461. The next prime is 1311230166577. The reversal of 1311230166510 is 156610321131.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 1986712044 + ... + 1986712703.

It is an arithmetic number, because the mean of its divisors is an integer number (107282468196).

Almost surely, 2^{1311230166510} is an apocalyptic number.

1311230166510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311230166510 is an abundant number, since it is smaller than the sum of its proper divisors (2121808815762).

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

1311230166510 is a wasteful number, since it uses less digits than its factorization.

1311230166510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3973424768.

The product of its (nonzero) digits is 3240, while the sum is 30.

Adding to 1311230166510 its reverse (156610321131), we get a palindrome (1467840487641).

The spelling of 1311230166510 in words is "one trillion, three hundred eleven billion, two hundred thirty million, one hundred sixty-six thousand, five hundred ten".