3145117691 has 8 divisors (see below), whose sum is σ = 3335621760. Its totient is φ = 2955224448.

The previous prime is 3145117673. The next prime is 3145117711. The reversal of 3145117691 is 1967115413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3145117691 - 2⁶ = 3145117627 is a prime.

It is a super-3 number, since 3×3145117691³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145113691) 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, 142076 + ... + 162713.

It is an arithmetic number, because the mean of its divisors is an integer number (416952720).

Almost surely, 2^3145117691 is an apocalyptic number.

3145117691 is a deficient number, since it is larger than the sum of its proper divisors (190504069).

3145117691 is a wasteful number, since it uses less digits than its factorization.

3145117691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305413.

The product of its digits is 22680, while the sum is 38.

The square root of 3145117691 is about 56081.3488692988. The cubic root of 3145117691 is about 1465.1394666621.

The spelling of 3145117691 in words is "three billion, one hundred forty-five million, one hundred seventeen thousand, six hundred ninety-one".