104405131 has 2 divisors, whose sum is σ = 104405132. Its totient is φ = 104405130.

The previous prime is 104405129. The next prime is 104405137. The reversal of 104405131 is 131504401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 104405131 - 2¹ = 104405129 is a prime.

It is a super-2 number, since 2×104405131² = 21800862758254322, which contains 22 as substring.

Together with 104405129, it forms a pair of twin primes.

It is equal to p_6000526 and since 104405131 and 6000526 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 104405099 and 104405108.

It is not a weakly prime, because it can be changed into another prime (104405137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52202565 + 52202566.

It is an arithmetic number, because the mean of its divisors is an integer number (52202566).

Almost surely, 2^104405131 is an apocalyptic number.

104405131 is a deficient number, since it is larger than the sum of its proper divisors (1).

104405131 is an equidigital number, since it uses as much as digits as its factorization.

104405131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 104405131 is about 10217.8829020497. The cubic root of 104405131 is about 470.8767864526.

Adding to 104405131 its reverse (131504401), we get a palindrome (235909532).

The spelling of 104405131 in words is "one hundred four million, four hundred five thousand, one hundred thirty-one".