31542430434434 has 8 divisors (see below), whose sum is σ = 47321991698940. Its totient is φ = 15768433201456.

The previous prime is 31542430434407. The next prime is 31542430434451. The reversal of 31542430434434 is 43443403424513.

It can be written as a sum of positive squares in 2 ways, for example, as 30222121426225 + 1320309008209 = 5497465^2 + 1149047^2 .

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

It is a super-2 number, since 2×31542430434434² (a number of 28 digits) contains 22 as substring.

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, 1390993709 + ... + 1391016384.

Almost surely, 2^{31542430434434} is an apocalyptic number.

31542430434434 is a deficient number, since it is larger than the sum of its proper divisors (15779561264506).

31542430434434 is a wasteful number, since it uses less digits than its factorization.

31542430434434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782015764.

The product of its (nonzero) digits is 3317760, while the sum is 44.

Adding to 31542430434434 its reverse (43443403424513), we get a palindrome (74985833858947).

The spelling of 31542430434434 in words is "thirty-one trillion, five hundred forty-two billion, four hundred thirty million, four hundred thirty-four thousand, four hundred thirty-four".