31944913543 has 2 divisors, whose sum is σ = 31944913544. Its totient is φ = 31944913542.

The previous prime is 31944913529. The next prime is 31944913597. The reversal of 31944913543 is 34531944913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31944913543 - 2¹³ = 31944905351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31944913493 and 31944913502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31944913513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15972456771 + 15972456772.

It is an arithmetic number, because the mean of its divisors is an integer number (15972456772).

Almost surely, 2^31944913543 is an apocalyptic number.

31944913543 is a deficient number, since it is larger than the sum of its proper divisors (1).

31944913543 is an equidigital number, since it uses as much as digits as its factorization.

31944913543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 46.

The spelling of 31944913543 in words is "thirty-one billion, nine hundred forty-four million, nine hundred thirteen thousand, five hundred forty-three".