131323104 has 72 divisors (see below), whose sum is σ = 407409912. Its totient is φ = 39793920.

The previous prime is 131323103. The next prime is 131323111. The reversal of 131323104 is 401323131.

131323104 = T₂₂₄ + T₂₂₅ + ... + T₉₂₇.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131323103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17559 + ... + 23894.

It is an arithmetic number, because the mean of its divisors is an integer number (5658471).

Almost surely, 2^131323104 is an apocalyptic number.

It is an amenable number.

131323104 is an abundant number, since it is smaller than the sum of its proper divisors (276086808).

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

131323104 is a wasteful number, since it uses less digits than its factorization.

131323104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41480 (or 41469 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 131323104 is about 11459.6293133766. The cubic root of 131323104 is about 508.2925134531.

Adding to 131323104 its reverse (401323131), we get a palindrome (532646235).

The spelling of 131323104 in words is "one hundred thirty-one million, three hundred twenty-three thousand, one hundred four".