131435401 has 2 divisors, whose sum is σ = 131435402. Its totient is φ = 131435400.

The previous prime is 131435399. The next prime is 131435417. The reversal of 131435401 is 104534131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127125625 + 4309776 = 11275^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 131435401 - 2¹ = 131435399 is a prime.

It is a super-3 number, since 3×131435401³ (a number of 25 digits) contains 333 as substring.

Together with 131435399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131435431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65717700 + 65717701.

It is an arithmetic number, because the mean of its divisors is an integer number (65717701).

Almost surely, 2^131435401 is an apocalyptic number.

It is an amenable number.

131435401 is a deficient number, since it is larger than the sum of its proper divisors (1).

131435401 is an equidigital number, since it uses as much as digits as its factorization.

131435401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 131435401 is about 11464.5279449265. The cubic root of 131435401 is about 508.4373558567.

Adding to 131435401 its reverse (104534131), we get a palindrome (235969532).

The spelling of 131435401 in words is "one hundred thirty-one million, four hundred thirty-five thousand, four hundred one".