31841313389 has 2 divisors, whose sum is σ = 31841313390. Its totient is φ = 31841313388.

The previous prime is 31841313373. The next prime is 31841313421. The reversal of 31841313389 is 98331314813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29007880489 + 2833432900 = 170317^2 + 53230^2 .

It is a cyclic number.

It is not a de Polignac number, because 31841313389 - 2⁴ = 31841313373 is a prime.

It is a super-5 number, since 5×31841313389⁵ (a number of 54 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31841313319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15920656694 + 15920656695.

It is an arithmetic number, because the mean of its divisors is an integer number (15920656695).

Almost surely, 2^31841313389 is an apocalyptic number.

It is an amenable number.

31841313389 is a deficient number, since it is larger than the sum of its proper divisors (1).

31841313389 is an equidigital number, since it uses as much as digits as its factorization.

31841313389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The spelling of 31841313389 in words is "thirty-one billion, eight hundred forty-one million, three hundred thirteen thousand, three hundred eighty-nine".