31434434242 has 8 divisors (see below), whose sum is σ = 47568922956. Its totient is φ = 15578126592.

The previous prime is 31434434237. The next prime is 31434434257. The reversal of 31434434242 is 24243443413.

It can be written as a sum of positive squares in 2 ways, for example, as 24733538361 + 6700895881 = 157269^2 + 81859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31434434242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31434434198 and 31434434207.

It is an unprimeable number.

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, 69544983 + ... + 69545434.

Almost surely, 2^31434434242 is an apocalyptic number.

31434434242 is a deficient number, since it is larger than the sum of its proper divisors (16134488714).

31434434242 is a wasteful number, since it uses less digits than its factorization.

31434434242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139090532.

The product of its digits is 110592, while the sum is 34.

Adding to 31434434242 its reverse (24243443413), we get a palindrome (55677877655).

The spelling of 31434434242 in words is "thirty-one billion, four hundred thirty-four million, four hundred thirty-four thousand, two hundred forty-two".