131121310 has 16 divisors (see below), whose sum is σ = 236602800. Its totient is φ = 52318656.

The previous prime is 131121307. The next prime is 131121379. The reversal of 131121310 is 13121131.

It is a super-2 number, since 2×131121310² = 34385595872232200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11940 + ... + 20119.

It is an arithmetic number, because the mean of its divisors is an integer number (14787675).

Almost surely, 2^131121310 is an apocalyptic number.

131121310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131121310 is a deficient number, since it is larger than the sum of its proper divisors (105481490).

131121310 is a wasteful number, since it uses less digits than its factorization.

131121310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32475.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 131121310 is about 11450.8213679194. The cubic root of 131121310 is about 508.0320287946.

Adding to 131121310 its reverse (13121131), we get a palindrome (144242441).

The spelling of 131121310 in words is "one hundred thirty-one million, one hundred twenty-one thousand, three hundred ten".