131368477 has 2 divisors, whose sum is σ = 131368478. Its totient is φ = 131368476.

The previous prime is 131368459. The next prime is 131368481. The reversal of 131368477 is 774863131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103002201 + 28366276 = 10149^2 + 5326^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131368477 is a prime.

It is a super-3 number, since 3×131368477³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131368417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65684238 + 65684239.

It is an arithmetic number, because the mean of its divisors is an integer number (65684239).

Almost surely, 2^131368477 is an apocalyptic number.

It is an amenable number.

131368477 is a deficient number, since it is larger than the sum of its proper divisors (1).

131368477 is an equidigital number, since it uses as much as digits as its factorization.

131368477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 131368477 is about 11461.6088312243. The cubic root of 131368477 is about 508.3510461862.

The spelling of 131368477 in words is "one hundred thirty-one million, three hundred sixty-eight thousand, four hundred seventy-seven".