1215024643131 has 16 divisors (see below), whose sum is σ = 1820505152256. Its totient is φ = 715198451616.

The previous prime is 1215024643103. The next prime is 1215024643163. The reversal of 1215024643131 is 1313464205121.

It is not a de Polignac number, because 1215024643131 - 2¹⁵ = 1215024610363 is a prime.

It is a super-2 number, since 2×1215024643131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1215024643092 and 1215024643101.

It is not an unprimeable number, because it can be changed into a prime (1215024643631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677270365 + ... + 677272158.

It is an arithmetic number, because the mean of its divisors is an integer number (113781572016).

Almost surely, 2^{1215024643131} is an apocalyptic number.

1215024643131 is a deficient number, since it is larger than the sum of its proper divisors (605480509125).

1215024643131 is a wasteful number, since it uses less digits than its factorization.

1215024643131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354542562.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 1215024643131 its reverse (1313464205121), we get a palindrome (2528488848252).

The spelling of 1215024643131 in words is "one trillion, two hundred fifteen billion, twenty-four million, six hundred forty-three thousand, one hundred thirty-one".