31253123443 has 8 divisors (see below), whose sum is σ = 31723759568. Its totient is φ = 30782610144.

The previous prime is 31253123437. The next prime is 31253123479. The reversal of 31253123443 is 34432135213.

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 a de Polignac number, because none of the positive numbers 2^k-31253123443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31253123413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569605 + ... + 622057.

It is an arithmetic number, because the mean of its divisors is an integer number (3965469946).

Almost surely, 2^31253123443 is an apocalyptic number.

31253123443 is a deficient number, since it is larger than the sum of its proper divisors (470636125).

31253123443 is an equidigital number, since it uses as much as digits as its factorization.

31253123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61413.

The product of its digits is 25920, while the sum is 31.

Adding to 31253123443 its reverse (34432135213), we get a palindrome (65685258656).

The spelling of 31253123443 in words is "thirty-one billion, two hundred fifty-three million, one hundred twenty-three thousand, four hundred forty-three".