6913131255 has 24 divisors (see below), whose sum is σ = 12049717680. Its totient is φ = 3666401280.

The previous prime is 6913131217. The next prime is 6913131263. The reversal of 6913131255 is 5521313196.

It is a happy number.

6913131255 is a `hidden beast` number, since 6 + 91 + 313 + 1 + 255 = 666.

It is not a de Polignac number, because 6913131255 - 2⁹ = 6913130743 is a prime.

It is a congruent number.

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, 421066 + ... + 437175.

It is an arithmetic number, because the mean of its divisors is an integer number (502071570).

Almost surely, 2^6913131255 is an apocalyptic number.

6913131255 is a deficient number, since it is larger than the sum of its proper divisors (5136586425).

6913131255 is a wasteful number, since it uses less digits than its factorization.

6913131255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858431 (or 858428 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 6913131255 is about 83145.2419264025. The cubic root of 6913131255 is about 1904.9851777217.

The spelling of 6913131255 in words is "six billion, nine hundred thirteen million, one hundred thirty-one thousand, two hundred fifty-five".