131404613 has 2 divisors, whose sum is σ = 131404614. Its totient is φ = 131404612.

The previous prime is 131404607. The next prime is 131404633. The reversal of 131404613 is 316404131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76615009 + 54789604 = 8753^2 + 7402^2 .

It is a cyclic number.

It is not a de Polignac number, because 131404613 - 2¹² = 131400517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131404633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65702306 + 65702307.

It is an arithmetic number, because the mean of its divisors is an integer number (65702307).

Almost surely, 2^131404613 is an apocalyptic number.

It is an amenable number.

131404613 is a deficient number, since it is larger than the sum of its proper divisors (1).

131404613 is an equidigital number, since it uses as much as digits as its factorization.

131404613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 131404613 is about 11463.1851158393. The cubic root of 131404613 is about 508.3976532306.

Adding to 131404613 its reverse (316404131), we get a palindrome (447808744).

The spelling of 131404613 in words is "one hundred thirty-one million, four hundred four thousand, six hundred thirteen".