104131431 has 48 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 63383040.

The previous prime is 104131429. The next prime is 104131439. The reversal of 104131431 is 134131401.

104131431 is a `hidden beast` number, since 104 + 131 + 431 = 666.

It is not a de Polignac number, because 104131431 - 2¹ = 104131429 is a prime.

It is a super-2 number, since 2×104131431² = 21686709844215522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104131439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 395806 + ... + 396068.

It is an arithmetic number, because the mean of its divisors is an integer number (3423420).

Almost surely, 2^104131431 is an apocalyptic number.

104131431 is a deficient number, since it is larger than the sum of its proper divisors (60192729).

104131431 is a wasteful number, since it uses less digits than its factorization.

104131431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 104131431 is about 10204.4809275141. The cubic root of 104131431 is about 470.4649556065.

Adding to 104131431 its reverse (134131401), we get a palindrome (238262832).

The spelling of 104131431 in words is "one hundred four million, one hundred thirty-one thousand, four hundred thirty-one".