31423444499 has 2 divisors, whose sum is σ = 31423444500. Its totient is φ = 31423444498.

The previous prime is 31423444391. The next prime is 31423444529. The reversal of 31423444499 is 99444432413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31423444499 - 2¹⁶ = 31423378963 is a prime.

It is a super-2 number, since 2×31423444499² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31423444799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15711722249 + 15711722250.

It is an arithmetic number, because the mean of its divisors is an integer number (15711722250).

Almost surely, 2^31423444499 is an apocalyptic number.

31423444499 is a deficient number, since it is larger than the sum of its proper divisors (1).

31423444499 is an equidigital number, since it uses as much as digits as its factorization.

31423444499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 47.

The spelling of 31423444499 in words is "thirty-one billion, four hundred twenty-three million, four hundred forty-four thousand, four hundred ninety-nine".