131931102 has 16 divisors (see below), whose sum is σ = 272374272. Its totient is φ = 42558360.

The previous prime is 131931091. The next prime is 131931103. The reversal of 131931102 is 201139131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131931103) 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, 354468 + ... + 354839.

It is an arithmetic number, because the mean of its divisors is an integer number (17023392).

Almost surely, 2^131931102 is an apocalyptic number.

131931102 is an abundant number, since it is smaller than the sum of its proper divisors (140443170).

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

131931102 is a wasteful number, since it uses less digits than its factorization.

131931102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709343.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 131931102 is about 11486.1265011317. The cubic root of 131931102 is about 509.0757346687.

The spelling of 131931102 in words is "one hundred thirty-one million, nine hundred thirty-one thousand, one hundred two".