1312151155 has 24 divisors (see below), whose sum is σ = 1833708240. Its totient is φ = 898752960.

The previous prime is 1312151147. The next prime is 1312151161. The reversal of 1312151155 is 5511512131.

It is not a de Polignac number, because 1312151155 - 2³ = 1312151147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264841 + ... + 269749.

It is an arithmetic number, because the mean of its divisors is an integer number (76404510).

Almost surely, 2^1312151155 is an apocalyptic number.

1312151155 is a deficient number, since it is larger than the sum of its proper divisors (521557085).

1312151155 is a wasteful number, since it uses less digits than its factorization.

1312151155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019 (or 6012 counting only the distinct ones).

The product of its digits is 750, while the sum is 25.

The square root of 1312151155 is about 36223.6270271214. The cubic root of 1312151155 is about 1094.7827748940.

Adding to 1312151155 its reverse (5511512131), we get a palindrome (6823663286).

The spelling of 1312151155 in words is "one billion, three hundred twelve million, one hundred fifty-one thousand, one hundred fifty-five".