31221230123010 has 32 divisors (see below), whose sum is σ = 74931898982400. Its totient is φ = 8325556178688.

The previous prime is 31221230123003. The next prime is 31221230123113. The reversal of 31221230123010 is 1032103212213.

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 15 ways as a sum of consecutive naturals, for example, 4145410 + ... + 8923389.

It is an arithmetic number, because the mean of its divisors is an integer number (2341621843200).

Almost surely, 2^{31221230123010} is an apocalyptic number.

31221230123010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31221230123010 is an abundant number, since it is smaller than the sum of its proper divisors (43710668859390).

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

31221230123010 is a wasteful number, since it uses less digits than its factorization.

31221230123010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13148442.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31221230123010 its reverse (1032103212213), we get a palindrome (32253333335223).

The spelling of 31221230123010 in words is "thirty-one trillion, two hundred twenty-one billion, two hundred thirty million, one hundred twenty-three thousand, ten".