131033401 has 2 divisors, whose sum is σ = 131033402. Its totient is φ = 131033400.

The previous prime is 131033389. The next prime is 131033459. The reversal of 131033401 is 104330131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130507776 + 525625 = 11424^2 + 725^2 .

It is an emirp because it is prime and its reverse (104330131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131033401 - 2²³ = 122644793 is a prime.

It is not a weakly prime, because it can be changed into another prime (131033471) 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, 65516700 + 65516701.

It is an arithmetic number, because the mean of its divisors is an integer number (65516701).

Almost surely, 2^131033401 is an apocalyptic number.

It is an amenable number.

131033401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131033401 is an equidigital number, since it uses as much as digits as its factorization.

131033401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 131033401 is about 11446.9821787229. The cubic root of 131033401 is about 507.9184683772.

Adding to 131033401 its reverse (104330131), we get a palindrome (235363532).

The spelling of 131033401 in words is "one hundred thirty-one million, thirty-three thousand, four hundred one".