5640146231 has 4 divisors (see below), whose sum is σ = 5822086464. Its totient is φ = 5458206000.

The previous prime is 5640146207. The next prime is 5640146279. The reversal of 5640146231 is 1326410465.

5640146231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5640146231 - 2²⁶ = 5573037367 is a prime.

It is a super-3 number, since 3×5640146231³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640146431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90970070 + ... + 90970131.

It is an arithmetic number, because the mean of its divisors is an integer number (1455521616).

Almost surely, 2^5640146231 is an apocalyptic number.

5640146231 is a deficient number, since it is larger than the sum of its proper divisors (181940233).

5640146231 is a wasteful number, since it uses less digits than its factorization.

5640146231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181940232.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 5640146231 is about 75100.9069918600. The cubic root of 5640146231 is about 1780.0414743314.

Adding to 5640146231 its reverse (1326410465), we get a palindrome (6966556696).

The spelling of 5640146231 in words is "five billion, six hundred forty million, one hundred forty-six thousand, two hundred thirty-one".