240412512731287 has 4 divisors (see below), whose sum is σ = 258905782941400. Its totient is φ = 221919242521176.

The previous prime is 240412512731249. The next prime is 240412512731327. The reversal of 240412512731287 is 782137215214042.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 240412512731287 - 2⁴³ = 231616419709079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 240412512731287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240412512741287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9246635105037 + ... + 9246635105062.

It is an arithmetic number, because the mean of its divisors is an integer number (64726445735350).

Almost surely, 2^{240412512731287} is an apocalyptic number.

240412512731287 is a deficient number, since it is larger than the sum of its proper divisors (18493270210113).

240412512731287 is a wasteful number, since it uses less digits than its factorization.

240412512731287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18493270210112.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 240412512731287 in words is "two hundred forty trillion, four hundred twelve billion, five hundred twelve million, seven hundred thirty-one thousand, two hundred eighty-seven".