1312155134 has 16 divisors (see below), whose sum is σ = 1999762128. Its totient is φ = 645629952.

The previous prime is 1312155127. The next prime is 1312155137. The reversal of 1312155134 is 4315512131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312155137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27284 + ... + 58040.

It is an arithmetic number, because the mean of its divisors is an integer number (124985133).

Almost surely, 2^1312155134 is an apocalyptic number.

1312155134 is a deficient number, since it is larger than the sum of its proper divisors (687606994).

1312155134 is a wasteful number, since it uses less digits than its factorization.

1312155134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31099.

The product of its digits is 1800, while the sum is 26.

The square root of 1312155134 is about 36223.6819497963. The cubic root of 1312155134 is about 1094.7838815084.

Adding to 1312155134 its reverse (4315512131), we get a palindrome (5627667265).

The spelling of 1312155134 in words is "one billion, three hundred twelve million, one hundred fifty-five thousand, one hundred thirty-four".