1311002233040 has 20 divisors (see below), whose sum is σ = 3048080192004. Its totient is φ = 524400893184.

The previous prime is 1311002232983. The next prime is 1311002233063. The reversal of 1311002233040 is 403322001131.

It can be written as a sum of positive squares in 2 ways, for example, as 719124352144 + 591877880896 = 848012^2 + 769336^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 8193763877 + ... + 8193764036.

Almost surely, 2^{1311002233040} is an apocalyptic number.

1311002233040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311002233040 is an abundant number, since it is smaller than the sum of its proper divisors (1737077958964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311002233040 is a wasteful number, since it uses less digits than its factorization.

1311002233040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16387527926 (or 16387527920 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1311002233040 its reverse (403322001131), we get a palindrome (1714324234171).

The spelling of 1311002233040 in words is "one trillion, three hundred eleven billion, two million, two hundred thirty-three thousand, forty".