31120163434 has 4 divisors (see below), whose sum is σ = 46680245154. Its totient is φ = 15560081716.

The previous prime is 31120163411. The next prime is 31120163449. The reversal of 31120163434 is 43436102113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43436102113 = 907 ⋅47889859.

It can be written as a sum of positive squares in only one way, i.e., 26724075625 + 4396087809 = 163475^2 + 66303^2 .

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 as a sum of consecutive naturals, namely, 7780040857 + ... + 7780040860.

Almost surely, 2^31120163434 is an apocalyptic number.

31120163434 is a deficient number, since it is larger than the sum of its proper divisors (15560081720).

31120163434 is a wasteful number, since it uses less digits than its factorization.

31120163434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15560081719.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 31120163434 its reverse (43436102113), we get a palindrome (74556265547).

The spelling of 31120163434 in words is "thirty-one billion, one hundred twenty million, one hundred sixty-three thousand, four hundred thirty-four".