31424240312203 has 4 divisors (see below), whose sum is σ = 31573170361288. Its totient is φ = 31275310263120.

The previous prime is 31424240312189. The next prime is 31424240312273. The reversal of 31424240312203 is 30221304242413.

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 31424240312203 - 2³³ = 31415650377611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31424240312273) 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, 74465024226 + ... + 74465024647.

It is an arithmetic number, because the mean of its divisors is an integer number (7893292590322).

Almost surely, 2^{31424240312203} is an apocalyptic number.

31424240312203 is a deficient number, since it is larger than the sum of its proper divisors (148930049085).

31424240312203 is a wasteful number, since it uses less digits than its factorization.

31424240312203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148930049084.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 31424240312203 its reverse (30221304242413), we get a palindrome (61645544554616).

The spelling of 31424240312203 in words is "thirty-one trillion, four hundred twenty-four billion, two hundred forty million, three hundred twelve thousand, two hundred three".