131970401 has 2 divisors, whose sum is σ = 131970402. Its totient is φ = 131970400.

The previous prime is 131970373. The next prime is 131970413. The reversal of 131970401 is 104079131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131446225 + 524176 = 11465^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 131970401 - 2¹⁸ = 131708257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131970451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65985200 + 65985201.

It is an arithmetic number, because the mean of its divisors is an integer number (65985201).

Almost surely, 2^131970401 is an apocalyptic number.

It is an amenable number.

131970401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131970401 is an equidigital number, since it uses as much as digits as its factorization.

131970401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 131970401 is about 11487.8370897223. The cubic root of 131970401 is about 509.1262766583.

The spelling of 131970401 in words is "one hundred thirty-one million, nine hundred seventy thousand, four hundred one".