1311640233015 has 64 divisors (see below), whose sum is σ = 2409682176000. Its totient is φ = 596799995904.

The previous prime is 1311640232971. The next prime is 1311640233089. The reversal of 1311640233015 is 5103320461131.

It is not a de Polignac number, because 1311640233015 - 2¹³ = 1311640224823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19248294 + ... + 19316316.

It is an arithmetic number, because the mean of its divisors is an integer number (37651284000).

Almost surely, 2^{1311640233015} is an apocalyptic number.

1311640233015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311640233015 is a deficient number, since it is larger than the sum of its proper divisors (1098041942985).

1311640233015 is a wasteful number, since it uses less digits than its factorization.

1311640233015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68896.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 1311640233015 its reverse (5103320461131), we get a palindrome (6414960694146).

The spelling of 1311640233015 in words is "one trillion, three hundred eleven billion, six hundred forty million, two hundred thirty-three thousand, fifteen".