131221032310 has 16 divisors (see below), whose sum is σ = 236217982176. Its totient is φ = 52483940928.

The previous prime is 131221032247. The next prime is 131221032311. The reversal of 131221032310 is 13230122131.

It is a super-2 number, since 2×131221032310² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221032311) 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 7 ways as a sum of consecutive naturals, for example, 434439 + ... + 671698.

It is an arithmetic number, because the mean of its divisors is an integer number (14763623886).

Almost surely, 2^131221032310 is an apocalyptic number.

131221032310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131221032310 is a deficient number, since it is larger than the sum of its proper divisors (104996949866).

131221032310 is a wasteful number, since it uses less digits than its factorization.

131221032310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118007.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 131221032310 its reverse (13230122131), we get a palindrome (144451154441).

The spelling of 131221032310 in words is "one hundred thirty-one billion, two hundred twenty-one million, thirty-two thousand, three hundred ten".