131231320310 has 64 divisors (see below), whose sum is σ = 262170748224. Its totient is φ = 47078707200.

The previous prime is 131231320247. The next prime is 131231320357. The reversal of 131231320310 is 13023132131.

It is a super-2 number, since 2×131231320310² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80780 + ... + 518640.

It is an arithmetic number, because the mean of its divisors is an integer number (4096417941).

Almost surely, 2^131231320310 is an apocalyptic number.

131231320310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131231320310 is a deficient number, since it is larger than the sum of its proper divisors (130939427914).

131231320310 is a wasteful number, since it uses less digits than its factorization.

131231320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437969.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131231320310 its reverse (13023132131), we get a palindrome (144254452441).

The spelling of 131231320310 in words is "one hundred thirty-one billion, two hundred thirty-one million, three hundred twenty thousand, three hundred ten".