31253140243 has 8 divisors (see below), whose sum is σ = 33691204736. Its totient is φ = 28819929600.

The previous prime is 31253140211. The next prime is 31253140277. The reversal of 31253140243 is 34204135213.

It is a happy number.

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 31253140243 - 2⁵ = 31253140211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31253140283) 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 7 ways as a sum of consecutive naturals, for example, 1200078 + ... + 1225843.

It is an arithmetic number, because the mean of its divisors is an integer number (4211400592).

Almost surely, 2^31253140243 is an apocalyptic number.

31253140243 is a deficient number, since it is larger than the sum of its proper divisors (2438064493).

31253140243 is a wasteful number, since it uses less digits than its factorization.

31253140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426925.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 31253140243 its reverse (34204135213), we get a palindrome (65457275456).

The spelling of 31253140243 in words is "thirty-one billion, two hundred fifty-three million, one hundred forty thousand, two hundred forty-three".