31102423243 has 2 divisors, whose sum is σ = 31102423244. Its totient is φ = 31102423242.

The previous prime is 31102423223. The next prime is 31102423259. The reversal of 31102423243 is 34232420113.

It is a strong prime.

It is an emirp because it is prime and its reverse (34232420113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31102423243 - 2¹⁷ = 31102292171 is a prime.

It is a super-3 number, since 3×31102423243³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (31102423223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15551211621 + 15551211622.

It is an arithmetic number, because the mean of its divisors is an integer number (15551211622).

Almost surely, 2^31102423243 is an apocalyptic number.

31102423243 is a deficient number, since it is larger than the sum of its proper divisors (1).

31102423243 is an equidigital number, since it uses as much as digits as its factorization.

31102423243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31102423243 its reverse (34232420113), we get a palindrome (65334843356).

The spelling of 31102423243 in words is "thirty-one billion, one hundred two million, four hundred twenty-three thousand, two hundred forty-three".