31220134230 has 32 divisors (see below), whose sum is σ = 74940616800. Its totient is φ = 8324003072.

The previous prime is 31220134229. The next prime is 31220134241. The reversal of 31220134230 is 3243102213.

It is a junction number, because it is equal to n+sod(n) for n = 31220134197 and 31220134206.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 107656 + ... + 272084.

It is an arithmetic number, because the mean of its divisors is an integer number (2341894275).

Almost surely, 2^31220134230 is an apocalyptic number.

31220134230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31220134230 is an abundant number, since it is smaller than the sum of its proper divisors (43720482570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31220134230 is a wasteful number, since it uses less digits than its factorization.

31220134230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170768.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31220134230 its reverse (3243102213), we get a palindrome (34463236443).

The spelling of 31220134230 in words is "thirty-one billion, two hundred twenty million, one hundred thirty-four thousand, two hundred thirty".