11687231247 has 16 divisors (see below), whose sum is σ = 17216997120. Its totient is φ = 7014330752.

The previous prime is 11687231219. The next prime is 11687231249. The reversal of 11687231247 is 74213278611.

It is a cyclic number.

It is not a de Polignac number, because 11687231247 - 2¹⁹ = 11686706959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11687231199 and 11687231208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11687231249) 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, 4980597 + ... + 4982942.

It is an arithmetic number, because the mean of its divisors is an integer number (1076062320).

Almost surely, 2^11687231247 is an apocalyptic number.

11687231247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11687231247 is a deficient number, since it is larger than the sum of its proper divisors (5529765873).

11687231247 is a wasteful number, since it uses less digits than its factorization.

11687231247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963582.

The product of its digits is 112896, while the sum is 42.

The spelling of 11687231247 in words is "eleven billion, six hundred eighty-seven million, two hundred thirty-one thousand, two hundred forty-seven".