31424434399 has 2 divisors, whose sum is σ = 31424434400. Its totient is φ = 31424434398.

The previous prime is 31424434351. The next prime is 31424434417. The reversal of 31424434399 is 99343442413.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31424434399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31424534399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15712217199 + 15712217200.

It is an arithmetic number, because the mean of its divisors is an integer number (15712217200).

Almost surely, 2^31424434399 is an apocalyptic number.

31424434399 is a deficient number, since it is larger than the sum of its proper divisors (1).

31424434399 is an equidigital number, since it uses as much as digits as its factorization.

31424434399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 46.

The spelling of 31424434399 in words is "thirty-one billion, four hundred twenty-four million, four hundred thirty-four thousand, three hundred ninety-nine".