131834921 has 2 divisors, whose sum is σ = 131834922. Its totient is φ = 131834920.

The previous prime is 131834897. The next prime is 131834951. The reversal of 131834921 is 129438131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131790400 + 44521 = 11480^2 + 211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131834921 is a prime.

It is not a weakly prime, because it can be changed into another prime (131834951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65917460 + 65917461.

It is an arithmetic number, because the mean of its divisors is an integer number (65917461).

Almost surely, 2^131834921 is an apocalyptic number.

It is an amenable number.

131834921 is a deficient number, since it is larger than the sum of its proper divisors (1).

131834921 is an equidigital number, since it uses as much as digits as its factorization.

131834921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 131834921 is about 11481.9389042095. The cubic root of 131834921 is about 508.9519950404.

The spelling of 131834921 in words is "one hundred thirty-one million, eight hundred thirty-four thousand, nine hundred twenty-one".