1111231355877 has 24 divisors (see below), whose sum is σ = 1610084614424. Its totient is φ = 738526408704.

The previous prime is 1111231355869. The next prime is 1111231355879. The reversal of 1111231355877 is 7785531321111.

It is a happy number.

1111231355877 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 2 + 31 + 35 + 587 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 430715251521 + 680516104356 = 656289^2 + 824934^2 .

It is not a de Polignac number, because 1111231355877 - 2³ = 1111231355869 is a prime.

It is a super-3 number, since 3×1111231355877³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111231355879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29137173 + ... + 29175285.

Almost surely, 2^{1111231355877} is an apocalyptic number.

It is an amenable number.

1111231355877 is a deficient number, since it is larger than the sum of its proper divisors (498853258547).

1111231355877 is a wasteful number, since it uses less digits than its factorization.

1111231355877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48069 (or 48066 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

Adding to 1111231355877 its reverse (7785531321111), we get a palindrome (8896762676988).

The spelling of 1111231355877 in words is "one trillion, one hundred eleven billion, two hundred thirty-one million, three hundred fifty-five thousand, eight hundred seventy-seven".