131621034 has 8 divisors (see below), whose sum is σ = 263242080. Its totient is φ = 43873676.

The previous prime is 131620997. The next prime is 131621047. The reversal of 131621034 is 430126131.

It is a sphenic number, since it is the product of 3 distinct primes.

131621034 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 131621034.

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 3 ways as a sum of consecutive naturals, for example, 10968414 + ... + 10968425.

It is an arithmetic number, because the mean of its divisors is an integer number (32905260).

Almost surely, 2^131621034 is an apocalyptic number.

131621034 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131621034 is a wasteful number, since it uses less digits than its factorization.

131621034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21936844.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 131621034 is about 11472.6210605947. The cubic root of 131621034 is about 508.6766073620.

Adding to 131621034 its reverse (430126131), we get a palindrome (561747165).

It can be divided in two parts, 13162 and 1034, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 131621034 in words is "one hundred thirty-one million, six hundred twenty-one thousand, thirty-four".