1231106135 has 24 divisors (see below), whose sum is σ = 1723433760. Its totient is φ = 841775424.

The previous prime is 1231106089. The next prime is 1231106141. The reversal of 1231106135 is 5316011321.

It is not a de Polignac number, because 1231106135 - 2⁸ = 1231105879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1231106135.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80957 + ... + 94953.

It is an arithmetic number, because the mean of its divisors is an integer number (71809740).

Almost surely, 2^1231106135 is an apocalyptic number.

1231106135 is a deficient number, since it is larger than the sum of its proper divisors (492327625).

1231106135 is a wasteful number, since it uses less digits than its factorization.

1231106135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14375 (or 14368 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1231106135 is about 35087.1220677901. The cubic root of 1231106135 is about 1071.7623546763.

Adding to 1231106135 its reverse (5316011321), we get a palindrome (6547117456).

The spelling of 1231106135 in words is "one billion, two hundred thirty-one million, one hundred six thousand, one hundred thirty-five".