1311111020104 has 16 divisors (see below), whose sum is σ = 2458359546300. Its totient is φ = 655548474432.

The previous prime is 1311111020081. The next prime is 1311111020113. The reversal of 1311111020104 is 4010201111131.

It can be written as a sum of positive squares in 2 ways, for example, as 1199222108100 + 111888912004 = 1095090^2 + 334498^2 .

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, 40359 + ... + 1619830.

Almost surely, 2^{1311111020104} is an apocalyptic number.

It is an amenable number.

1311111020104 is a deficient number, since it is larger than the sum of its proper divisors (1147248526196).

1311111020104 is a wasteful number, since it uses less digits than its factorization.

1311111020104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758912 (or 1758908 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1311111020104 its reverse (4010201111131), we get a palindrome (5321312131235).

The spelling of 1311111020104 in words is "one trillion, three hundred eleven billion, one hundred eleven million, twenty thousand, one hundred four".