1287623231036 has 12 divisors (see below), whose sum is σ = 2253381609528. Its totient is φ = 643799914032.

The previous prime is 1287623230991. The next prime is 1287623231047. The reversal of 1287623231036 is 6301323267821.

It is a happy number.

It is a super-3 number, since 3×1287623231036³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2675411 + ... + 3119786.

It is an arithmetic number, because the mean of its divisors is an integer number (187781800794).

Almost surely, 2^{1287623231036} is an apocalyptic number.

It is an amenable number.

1287623231036 is a deficient number, since it is larger than the sum of its proper divisors (965758378492).

1287623231036 is a wasteful number, since it uses less digits than its factorization.

1287623231036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850748 (or 5850746 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

Adding to 1287623231036 its reverse (6301323267821), we get a palindrome (7588946498857).

The spelling of 1287623231036 in words is "one trillion, two hundred eighty-seven billion, six hundred twenty-three million, two hundred thirty-one thousand, thirty-six".