1311121530235 has 16 divisors (see below), whose sum is σ = 1733041140480. Its totient is φ = 944285228640.

The previous prime is 1311121530227. The next prime is 1311121530253. The reversal of 1311121530235 is 5320351211131.

It is not a de Polignac number, because 1311121530235 - 2³ = 1311121530227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115715565 + ... + 115726894.

It is an arithmetic number, because the mean of its divisors is an integer number (108315071280).

Almost surely, 2^{1311121530235} is an apocalyptic number.

1311121530235 is a deficient number, since it is larger than the sum of its proper divisors (421919610245).

1311121530235 is a wasteful number, since it uses less digits than its factorization.

1311121530235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231442578.

The product of its (nonzero) digits is 2700, while the sum is 28.

Adding to 1311121530235 its reverse (5320351211131), we get a palindrome (6631472741366).

The spelling of 1311121530235 in words is "one trillion, three hundred eleven billion, one hundred twenty-one million, five hundred thirty thousand, two hundred thirty-five".