31243773419 has 2 divisors, whose sum is σ = 31243773420. Its totient is φ = 31243773418.

The previous prime is 31243773401. The next prime is 31243773461. The reversal of 31243773419 is 91437734213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31243773419 - 2⁸ = 31243773163 is a prime.

It is a super-2 number, since 2×31243773419² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31243773419.

It is not a weakly prime, because it can be changed into another prime (31243773019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15621886709 + 15621886710.

It is an arithmetic number, because the mean of its divisors is an integer number (15621886710).

Almost surely, 2^31243773419 is an apocalyptic number.

31243773419 is a deficient number, since it is larger than the sum of its proper divisors (1).

31243773419 is an equidigital number, since it uses as much as digits as its factorization.

31243773419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 44.

The spelling of 31243773419 in words is "thirty-one billion, two hundred forty-three million, seven hundred seventy-three thousand, four hundred nineteen".