31220414434 has 24 divisors (see below), whose sum is σ = 51597417564. Its totient is φ = 14157343200.

The previous prime is 31220414431. The next prime is 31220414461. The reversal of 31220414434 is 43441402213.

It can be written as a sum of positive squares in 2 ways, for example, as 24477541209 + 6742873225 = 156453^2 + 82115^2 .

It is not an unprimeable number, because it can be changed into a prime (31220414431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51337 + ... + 255100.

Almost surely, 2^31220414434 is an apocalyptic number.

31220414434 is a deficient number, since it is larger than the sum of its proper divisors (20377003130).

31220414434 is a wasteful number, since it uses less digits than its factorization.

31220414434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306882 (or 306871 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31220414434 its reverse (43441402213), we get a palindrome (74661816647).

The spelling of 31220414434 in words is "thirty-one billion, two hundred twenty million, four hundred fourteen thousand, four hundred thirty-four".