31242213210 has 64 divisors (see below), whose sum is σ = 80767290240. Its totient is φ = 7688659200.

The previous prime is 31242213203. The next prime is 31242213229. The reversal of 31242213210 is 1231224213.

It is a Curzon 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 31 ways as a sum of consecutive naturals, for example, 3076321 + ... + 3086459.

It is an arithmetic number, because the mean of its divisors is an integer number (1261988910).

Almost surely, 2^31242213210 is an apocalyptic number.

31242213210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31242213210 is an abundant number, since it is smaller than the sum of its proper divisors (49525077030).

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

31242213210 is a wasteful number, since it uses less digits than its factorization.

31242213210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18063.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31242213210 its reverse (1231224213), we get a palindrome (32473437423).

The spelling of 31242213210 in words is "thirty-one billion, two hundred forty-two million, two hundred thirteen thousand, two hundred ten".