31434235505 has 4 divisors (see below), whose sum is σ = 37721082612. Its totient is φ = 25147388400.

The previous prime is 31434235501. The next prime is 31434235513. The reversal of 31434235505 is 50553243413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50553243413 = 58573 ⋅863081.

It can be written as a sum of positive squares in 2 ways, for example, as 4082698816 + 27351536689 = 63896^2 + 165383^2 .

It is not a de Polignac number, because 31434235505 - 2² = 31434235501 is a prime.

It is a super-2 number, since 2×31434235505² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31434235501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3143423546 + ... + 3143423555.

It is an arithmetic number, because the mean of its divisors is an integer number (9430270653).

Almost surely, 2^31434235505 is an apocalyptic number.

It is an amenable number.

31434235505 is a deficient number, since it is larger than the sum of its proper divisors (6286847107).

31434235505 is an equidigital number, since it uses as much as digits as its factorization.

31434235505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286847106.

The product of its (nonzero) digits is 108000, while the sum is 35.

Adding to 31434235505 its reverse (50553243413), we get a palindrome (81987478918).

The spelling of 31434235505 in words is "thirty-one billion, four hundred thirty-four million, two hundred thirty-five thousand, five hundred five".