7145838731 has 4 divisors (see below), whose sum is σ = 7156883952. Its totient is φ = 7134793512.

The previous prime is 7145838719. The next prime is 7145838767. The reversal of 7145838731 is 1378385417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1378385417 = 239 ⋅5767303.

It is a cyclic number.

It is not a de Polignac number, because 7145838731 - 2¹⁰ = 7145837707 is a prime.

It is a super-2 number, since 2×7145838731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7145838131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5521640 + ... + 5522933.

It is an arithmetic number, because the mean of its divisors is an integer number (1789220988).

Almost surely, 2^7145838731 is an apocalyptic number.

7145838731 is a deficient number, since it is larger than the sum of its proper divisors (11045221).

7145838731 is a wasteful number, since it uses less digits than its factorization.

7145838731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11045220.

The product of its digits is 564480, while the sum is 47.

The square root of 7145838731 is about 84533.0629458084. The cubic root of 7145838731 is about 1926.1247134932.

The spelling of 7145838731 in words is "seven billion, one hundred forty-five million, eight hundred thirty-eight thousand, seven hundred thirty-one".