1313071155 has 56 divisors (see below), whose sum is σ = 2577294000. Its totient is φ = 636621120.

The previous prime is 1313071141. The next prime is 1313071163. The reversal of 1313071155 is 5511703131.

It is not a de Polignac number, because 1313071155 - 2⁴ = 1313071139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 23721 + ... + 56469.

Almost surely, 2^1313071155 is an apocalyptic number.

1313071155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1313071155 is a deficient number, since it is larger than the sum of its proper divisors (1264222845).

1313071155 is an equidigital number, since it uses as much as digits as its factorization.

1313071155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32783 (or 32768 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 27.

The square root of 1313071155 is about 36236.3236959822. The cubic root of 1313071155 is about 1095.0385799880.

Adding to 1313071155 its reverse (5511703131), we get a palindrome (6824774286).

The spelling of 1313071155 in words is "one billion, three hundred thirteen million, seventy-one thousand, one hundred fifty-five".