1215200131311 has 8 divisors (see below), whose sum is σ = 1635409522944. Its totient is φ = 802562080280.

The previous prime is 1215200131303. The next prime is 1215200131333. The reversal of 1215200131311 is 1131310025121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215200131311 - 2³ = 1215200131303 is a prime.

It is a super-2 number, since 2×1215200131311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215200131381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1892834775 + ... + 1892835416.

It is an arithmetic number, because the mean of its divisors is an integer number (204426190368).

Almost surely, 2^{1215200131311} is an apocalyptic number.

1215200131311 is a deficient number, since it is larger than the sum of its proper divisors (420209391633).

1215200131311 is a wasteful number, since it uses less digits than its factorization.

1215200131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785670301.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 1215200131311 its reverse (1131310025121), we get a palindrome (2346510156432).

The spelling of 1215200131311 in words is "one trillion, two hundred fifteen billion, two hundred million, one hundred thirty-one thousand, three hundred eleven".